View
274
Download
6
Category
Preview:
Citation preview
Alloy Selector Guide Revised 2013
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 1
Introduction The BEP Alloy Selector Guide presents ASTM Specifications in numerical order to facilitate quick reference and tentative
material selection. It is impossible to cover each specification in detail. The following pages are brief descriptions of the salient features of each specification. ASTM specifications can be purchased from ASTM.org.
BEP, Bradken Energy Products, consists of Bradken-Tacoma (formerly known as Atlas Foundry and Atlas Castings and Technology), Bradken Chehalis, and Bradken London (formerly known as AG Anderson). These facilities produce castings from a wide variation of materials, especially carbon steel, low alloy steel, stainless steel, and nickel base alloys. The London facility also produces some cast iron grades. This guide reflects requirements of the latest ASTM Standard: Volume 01.02, Ferrous Castings; Ferroalloys. This selector also includes other alloys not included in ASTM that are cast by Bradken-Tacoma, e.g. alloys for military and offshore applications.
From engineering to the finished casting product, BEP helps to define and meet every casting requirement presented by its customers. Chehalis and London melt using induction furnaces. Tacoma melts metal using basic arc furnaces and AOD refining. Tacoma’s AOD (Argon, Oxygen, and Decarburization) refining process creates clean metal that can have exceptional properties.
Table of Contents Introduction .......................................................................................................................................................................................... 1
Typical Footnotes and Nomenclature ................................................................................................................................................... 3
ASTM A27 – Steel Castings, Carbon, for General Application ............................................................................................................. 4
ASTM A148 – Steel Castings, High Strength, for Structural Purposes ................................................................................................. 5
ASTM A216 – Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service .................................................... 6
ASTM A217 – Steel Castings, Martensitic Stainless and Alloy, Pressure-Containing Parts, Suitable for High-Temperature Service .... 7
ASTM A297 - Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application ............................. 8
ASTM A351 – Castings; Austenitic for Pressure-Containing Parts ....................................................................................................... 9
ASTM A352 - Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service .......... 11
ASTM A356 – Steel Castings, Carbon, Low Alloy, and Stainless Steel, Heavy-Walled for Steam Turbines ....................................... 12
ASTM A389 – Steel Castings, Alloy, Specially Heat-Treated, for Pressure-Containing Parts, Suitable for High-Temperature Service13
ASTM A447 – Steel Castings, Chromium-Nickel-Iron Alloy (25Cr-12Ni Class), for High-Temperature Service .................................. 13
ASTM A487 – Steel Castings Suitable for Pressure Service .............................................................................................................. 14
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 2
ASTM A494 – Castings, Nickel and Nickel Alloy ................................................................................................................................ 16
ASTM A743 – Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application ................................. 17
ASTM A744 – Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service .................................................................. 20
ASTM A747 – Steel Castings, Stainless, Precipitation Hardening ...................................................................................................... 21
ASTM A757 – Steel Castings, Ferritic and Martensitic, Pressure-Containing and Other Applications, for Low-Temperature Service . 22
ASTM A890 – Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) General Application . 23
ASTM A915 – Steel Castings, Carbon and Alloy, Chemical Requirements Similar to Standard Wrought Grades .............................. 24
ASTM A958 – Steel Castings, Carbon and Alloy, Tensile and Chemical Requirements Similar to Standard Wrought Grades ........... 25
ASTM A990 – Castings, Iron-Nickel-Chromium, Nickel Alloys, Specially Controlled, Pressure Retaining Parts, Corrosive Service.... 27
ASTM A995 – Castings, Austenitic-Ferritic (Duplex) Stainless Steel, for Pressure-Containing Parts .................................................. 28
ASTM A1001 - High Strength Castings in Heavy Sections ................................................................................................................. 29
Offshore, Military, NAVSEA, and Other Alloys, not listed under ASTM Specifications ........................................................................ 31
Metallurgical Tests ............................................................................................................................................................................. 33
NON-DESTRUCTIVE EXAMINATIONS (NDE) .................................................................................................................................. 34
NDE TYPES ........................................................................................................................................................................................................... 34
NDE SPECIFICATIONS ....................................................................................................................................................................................... 35
Hardness Conversions ....................................................................................................................................................................... 36
Austenitic Stainless Steel Hardness Conversions ........................................................................................................................................... 36
Duplex Stainless Steel Hardness Conversions ................................................................................................................................ 37
CA6NM - Martensitic Stainless Steel ................................................................................................................................................................. 38
Bradken Alloy Cross Reference Tables ......................................................................................................................................... 39-40
Bradken Alloy Data Sheets ........................................................................................................................................................... 41-62
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 3
Typical Footnotes and Nomenclature a) Indicated treatments are typical, other treatments may be applied to meet specific requirements.
A = full anneal N = normalize T = temper Q = water quench C = as cast S = solution anneal PH = precipitation hardening FA = force air quench NT/QT = choice of NT or QT “~” = “approximately equal to”.
b) Values are either required range or minimum. c) Not required by ASTM, values are typical at +70˚F unless otherwise noted. d) Chemistry of Tacoma (internal) Alloy may be slightly modified from material type. The 3 and 4 digit numbers are AISI Grades.
A list of trademarks is provided. e) A “Manganese for Carbon” substitution is allowed. See specific ASTM specification Table for Chemical Requirements.
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 4
ASTM A27 – Steel Castings, Carbon, for General Application These are the most commonly used grades of cast steel for general application.
o Up to 70 ksi minimum tensile strength. o Excellent weldability and machinability.
These materials can be supplied in the following heat treated condition: o Normalized, normalized and tempered, or quench and tempered.
Chemical compositions have carbon, manganese, silicon, sulfur and phosphorous maximums.
The purchaser must specify both the grade and class desired. The grade specifies tensile and chemical requirements and the class indicates the post weld heat treatment: (See ASTM A27 paragraph 9.2)
Class 1: Casting must be post weld heat-treated and the welds to be heat-treated must be defined. Class 2: Post weld heat treatment is not required.
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red of Area (%)
Typical Hardnes
s HBW
C Mn SiApprox. Material
TypeUNS
Tacoma Alloy
(d)
N-1 QT or NT 150 .25(e) 0.75 0.80 1020 J02500 720, 725
N-2 QT or NT 150 .35(e) 0.60 0.80 1020 J03500 720, 725
U-60-30 No Quote As Cast
60-30 QT or NT 60 30 24 35 150 .30(e) 0.60 0.80 1020 J03000 720
65-35 QT or NT 65 35 24 35 160 .30(e) 0.70 0.80 1020 J03001 725
70-36 QT or NT 70 36 22 30 160 .35(e) 0.70 0.80 1025 J03501 725
Chemistry only
Chemistry only
ASTM A27- Steel Castings, Carbon, for General Application
GradeHeat
Treatment (a)
Chemical Composition % - MaximumMechanical Property Requirements (b) Alloy Designation
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 5
ASTM A148 – Steel Castings, High Strength, for Structural Purposes This specification is the most used specification in the low alloy group throughout the industry. Heat treatment methods are the option of the manufacturer. Mechanical properties are the prime criteria for these materials. Chemical composition limits are imposed on sulfur and phosphorus only. The alloy is chosen by the foundry for best compliance to the grade
required. When the maximum thickness of the casting is >3 inches and will be Q+T, then a test block Tx3Tx3T is imposed up to a maximum of T=5
inches.
ASTM A148 - Steel Castings, High Strength, for Structional Purposes
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red. of Area (%)
Charpy V-Notch (ft•lbf/°F)
Typical Hardness
BHW
Tacoma Alloy
(d)
80-40 QT or NT 80 40 18 30 183 820*831*
80-50 QT or NT 80 50 22 35 183 820*831*
90-60 QT 90 60 20 40 212 820*831*
105-85 QT 105 85 17 35 255 820*831*
115-95 QT 115 95 14 30 269 820*831*
130-115 QT 130 115 11 25 293 820*831*
135-125 QT 135 125 9 22 311 820*831*
150-135 QT 150 135 7 18 340
160-145 QT 160 145 6 12 364
165-150 QT 165 150 5 20 387
165-150L QT 165 150 5 20 20/-40 387
210-180 QT 210 180 4 15 444
210-180L QT 210 180 4 15 15/-40 444
260-210 QT 260 210 3 6 500
260-210L QT 260 210 3 6 6/-40 500
Grade Heat
Treatment (a)
Mechanical Property Requirements (b)
*Tacoma alloy 820 is typically used for these grades forup to 4 inches in wall thickness. Atlas alloy 831
is typically used for thickness exceeding 4 inches.
These alloys are best for smaller thinner castings (<500lb). The chemistry selected for these grades is dependent on the casting configuration and size. Chemistry may be selected by the foundry or, by agreement,
may be prescribed by the purchaser. These grades are very hard, crack prone, and difficult to weld and machine. Note the low elongation values specified.
Chemical Composition % - Maximum Alloy Designation
Chemical Composition % – Range or Maximum
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 6
ASTM A216 – Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service Carbon steel castings are typically used for fittings, pumps, valves, flanges or other pressure-containing parts for high-temperature service. All three grades have excellent machinability and weldability. Repairs by welding shall be made using procedures and welders qualified under ASTM A488 or in accordance with the ASME Boiler and
Pressure Vessel Code, Section IX. Supplemental requirement, S11, may be imposed for maximum carbon equivalent to control weldability. Supplementary requirement, S15, allows a water quench and temper heat treatment when specified by the user. When Charpy V-notch
impact toughness is required, water quench and temper will be invoked. Supplementary requirement, S16, is for Hydrofluoric acid service. This limits residual elements to very low levels. For this requirement
select Tacoma Alloy 711.
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red of Area (%)
Charpy V-Notch (ft-lb/ºF)
Typical Hardness
HBWC Mn Si Cr Ni Mo
Approx. Material
TypeUNS
Tacoma Alloy
(d)
WCA NT 60-85 30 24 35 150 .25(e) 0.7 0.6 0.5 0.5 0.2 1020 J02502 720, 725
WCB NT 70-95 36 22 35 155 .30(e) 1 0.6 0.5 0.5 0.2 1025 J03002 725
WCB NT 70-95 36 22 35 155 .30(e) 1 0.6 0.5 0.5 0.2 1025 J03002 711
WCB QT per S15 70-95 36 22 35 S15 for CVN 150 .30(e) 1 0.6 0.5 0.5 0.2 1020 J03002 725, 716
WCC NT 70-95 40 22 35 150 .25(e) 1.2 0.6 0.5 0.5 0.2 J02503 725
WCC QT per S15 70-95 40 22 35 S15 for CVN
150 .25(e) 1.2 0.6 0.5 0.5 0.2 J02503 725, 717
Grade (PW)Heat
Treatment (a)
Mechanical Property Requirements (b) Chemical Composition % - Range or Maximum Alloy DesignationASTM A216 - Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 7
ASTM A217 – Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service
These materials are used for turbines, compressors, valves, flanges, fittings and other pressure containing parts for relatively high temperatures and mildly corrosive media.
Heat treatment and chemical composition are rigidly prescribed. All grades are readily weldable and machinable, when proper techniques are followed. Major repair welds require a thermal stress relief or re-heat treatment. Repairs by welding shall be made using procedures and welders qualified under ASTM A488 or in accordance with the ASME Boiler and
Pressure Vessel Code, Section IX.
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red of Area (%)
Typical Hardnes
s HBW
C Mn Si Cr Ni Mo OtherApprox. Material
Type UNS
Tacoma Alloy
(d)
WC1 NT 65-90 35.0 24.0 35.0 155.0 0.25 .50-.80 0.6 .35 .45-.65 J12524 802
WC4 NT 70-95 40.0 20.0 35.0 180.0 .05-.20 .50-.80 0.6 .50-.80 .70-1.1 .45-.65 J12082
WC5 NT 70-95 40.0 20.0 35.0 180.0 .05-.20 .40-.70 0.6 .50-.90 .60-1.0 .90-1.2 J22000
WC6 NT 70-95 40.0 20.0 35.0 180.0 .05-.20 .50-.80 0.6 1.0-1.5 .45-.65 1 1/4 Cr 1/2 Mo
J12072 853
WC9 NT 70-95 40.0 20.0 35.0 190.0 .05-.18 .40-.70 0.6 2-2.75 .90-1.2 2 1/4 Cr 1Mo J21890 854
WC11 NT 80-105 50.0 18.0 45.0 180.0 .15-.21 .50-.80 .30-.60 1.0-1.5 .45-.65 J11872 856
C5 NT 90-115 60.0 18.0 35.0 205.0 0.2 .40-.70 0.75 4-6.5 .45-.65 5 Cr J42045 855
C12 NT 90-115 60.0 18.0 35.0 210.0 0.2 .35-.65 1 8-10 .90-1.2 9 Cr J82090 869
C12A NT 85-110 60.0 18.0 45.0 195 - 250 0.08 - 0.12 .30-.60 .20-.50 8-9.5 0.4 .85-1.05 N .03-.07
V .18-.25 P91, F91 J84090 859
CA-15 NT 90-115 65.0 18.0 30.0 220.0 0.15 1 1.5 11.5-14.0 1 0.5 410 J91150 900
ASTM A217 - Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service
GradeHeat
Treatment (a)
Mechanical Property Requirements Min. Chemical Composition % - Range or Maximum Alloy Designation
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 8
ASTM A297 - Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application
Tacoma Alloy 936 is a heat resistant alloy that has proven to be an excellent material for die molds. 936 is a proprietary to Tacoma. (See Alloy 936 Data Sheet on page 53).
The heat resistant grades have relatively high carbon content. Bradken-London makes these grades, Tacoma does not. They are for section thicknesses less than 3 inches. Thicker sections will have a propensity to crack. All grades have either relatively high or very high chromium and/or nickel contents. Castings for heat-resistant service may be shipped in the as-cast condition without heat treatment. If heat treatment is required, it shall be established by mutual agreement between the manufacturer and the purchaser and shall be so
specified in the inquiry, contract, or order.
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Typical Hardness
HBWC Mn Si Cr Ni Mo
Approx. Material
TypeUNS
Tacoma Alloy
(d)
HF C 70 35 25 165 .20-.40 2.0 2.0 18-23 8-12 0.5 302B J92603
HH C 75 35 10 180 .20-.50 2.0 2.0 24-28 11-14 0.5 309 J93503
HI C 75 35 10 180 .20-.50 2.0 2.0 26-30 14-18 0.5 J94003
HK C 65 35 10 170 .20-.60 2.0 2.0 24-28 18-22 0.5 310 J94224
HE C 85 40 9 240 .20-.50 2.0 2.0 26-30 8-11 0.5 312 J93403
HT C 65 4 180 .35-.75 2.0 2.5 15-19 33-37 0.5 330 N08605
HU C 65 4 170 .35-.75 2.0 2.5 17-21 37-41 0.5 N08004
HW C 60 185 .35-.75 2.0 2.5 10-14 58-62 0.5 N08001
HX C 60 175 .35-.75 2.0 2.5 15-19 64-68 0.5 N06006
HC C 55 200 0.5 1.0 2.0 26-30 4.0 0.5 446 J92605
HD C 75 35 8 190 0.5 1.5 2.0 26-30 4-7 0.5 327 J93005
HL C 65 35 10 190 .20-.60 2.0 2.0 28-32 18-22 0.5 N08604
HN C 63 8 160 .20-.50 2.0 2.0 19-23 23-27 0.5 J94213
HP C 62.5 34 4.5 160 .35-.75 2.0 2.5 24-28 33-37 0.5 N08705
HG10 MNN C 76 33 20 .07 - .11 3.0 - 5.0 0.7 18.5 - 20.5 11.5 - 13.5
.25 - .45 J92604
CT15C C 63 25 20 .05 - .15 .15 - 1.5 .15 - 1.5 19 - 21 31 - 34
ASTM A297 - Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application
GradeHeat
Treatment (a)
Mechanical Property Requirements (b) Chemical Composition % - Range or Maximum Alloy Designation
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 9
ASTM A351 – Castings; Austenitic for Pressure-Containing Parts
This specification covers austenitic and austenitic-ferritic (duplex) steel castings designed for use in pumps, valves, fittings, flanges and other pressure-containing parts intended for high-temperature and/or corrosive service.
Many of the grades carry the same alloy designations as those listed under Specification ASTM A743 and A744: Corrosion Resistant Castings, and contain the same basic chemistry.
Repairs by welding shall be made using procedures and welders qualified under ASTM A488 or in accordance with the ASME Boiler and Pressure Vessel Code, Section IX.
Grades CE20N, CF3A, CF3MA and CF8A are not recommended for service at temperatures above 800˚F [425˚C]. The duplex grades have been removed from this specification. See A995. The HK, HT, and CT 15˚C grades are normally furnished as-cast without heat treatment. All other grades are furnished in the solution-annealed condition. When austenitic steel castings are to be used in services where they will be subject to stress corrosion, the purchaser should so indicate in
his order. Such castings should be solution-heat treated following all repair welds.
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Typical Hardness
HBWC Mn Si Cr Ni Mo Other
Approx. Material
TypeUNS
Tacoma Alloy
(d)
CF3 Q 70 30 35 150 0.03 1.5 2.0 17-21 8-12 0.5 J92500 911
CF3A Q 77 35 35 160 0.03 1.5 2.0 17-21 8-12 0.5 J92700 911
CF8 Q 70 30 35 160 0.08 1.5 2.0 18-21 8-11 0.5 304 J92700 910
CF8A Q 77 35 35 160 0.08 1.5 2.0 18-21 8-11 0.5 304 J92600 913
CF3M Q 70 30 30 190 0.03 1.5 1.5 17-21 9-13 2-3 316L J92800 921
CF3MA Q 80 37 30 190 0.03 1.5 1.5 17-21 9-13 2-3 J92800 921 mod
CF8M Q 70 30 30 180 0.08 1.5 1.5 18-21 9-12 2-3 316 J92900 920
CF3MN Q 75 37 35 160 0.03 1.5 1.5 17-21 9-13 2-3 N .1-.2 316LN J92804 929
CF8C Q 70 30 30 180 0.08 1.5 2.0 18-21 9-12 0.5 Cb (A) 347 J92710 916
CF10 Q 70 30 35 160 .04 - .10 1.5 2.0 18-21 8-11 0.5 J92950 910 mod
ASTM A351 - Castings; Austenitic for Pressure Containing Parts
GradeHeat
Treatment (a)
Alloy DesignationMechanical Property Requirements (b) Chemical Composition % - Range or Maximum
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 10
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Typical Hardness
HBWC Mn Si Cr Ni Mo Other
Approx. Material
TypeUNS
Tacoma Alloy
(d)
CF10M Q 70 30 30 160 .04 - .10 1.50 1.5 18-21 9-12 2-3 J92901 928
CH8 Q 65 28 30 160 0.08 1.5 1.5 22-26 12-15 0.5 J93400
CH10 Q 70 30 30 180 .04 - .10 1.5 2.0 22-26 12-15 0.5 309S J93401 930
CH20 Q 70 30 30 180 .04 - .20 1.5 2.0 22-26 12-15 0.5 309 J93402 930
CK20 Q 65 28 30 160 .04 - .20 1.5 1.8 23-27 19-22 0.5 310 J94202 940
HK30 C 65 35 10 160 .25-.35 1.5 1.75 23-27 19-22 0.5 J94203 London
HK40 C 62 35 10 160 .35-.45 1.5 1.75 23-27 19-22 0.5 J94204 London
HT30 C 65 28 15 160 .25-.35 2.0 2.5 13-17 33-37 0.5 N08030 London
CF10MC Q 70 30 20 180 0.1 1.5 1.5 15-18 13-16 1.75-2.25 Cb (B) J92971
CN7M Q 62 25 35 130 0.07 1.5 1.5 19-22 27.5-30.5 2-3 Cu 3-4 Alloy 20 N08007 948
CN3MN Q 80 38 35 190 0.03 2.0 1.0 20-22 23.5-25.5 6-7 N .18-.26 Cu .75
AL-6XN J94651 949
CE8MN Q 95 65 25 0.08 1.0 1.5 22.5-25.5 8-11 3-4.5 N .1-.3
CG8M Q 75 35 25 190 0.08 1.5 1.5 18-21 9-13 3-4 317 J93000 914
CK3MCuN Q 80 38 35 190 0.025 1.2 1.0 19.5-20.5 17.5-19.5 6-7 N .18-.24 Cu .5-1
254SMO J93254 951
CG6MMN Q 85 42.5 30 180 0.06 4.0-6.0 1.0 20.5-23.5 11.5-13.5 1.5-3.0 Cb .1-.3 V .1-.3
Nitronic 50 J93790
CF10SMnN Q 85 42.5 30 180 0.1 7.0-9.0 3.5-4.5 16-18 8-9 N .08-.18 Nitronic 60 J92972 919
CT15C C 63 25 20 140 .05-.15 .15-1.5 .5-1.5 19-21 31-34 Cb .5-1.5 Incoloy 800 J95000
CE20N Q 80 40 30 0.2 1.5 1.5 23-26 8-11 0.5 N.08-.20 HF Modified
CG3M Q 75 35 25 190 .03 1.5 1.5 18-21 9-13 3-4 317L J92999 914
CG8M Q 75 35 25 190 0.08 1.5 1.5 18-21 9-13 3-4 317 J93000 914
ASTM A351 - Castings; Austenitic for Pressure Containing Parts Continued
GradeHeat
Treatment (a)
Alloy DesignationMechanical Property Requirements (b) Chemical Composition % - Range or Maximum
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 11
ASTM A352 - Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service
These alloys are for pressure-containing or dynamically loaded parts in low temperature service where impact properties are of prime
consideration. All grades are readily weldable and machinable, using proper techniques and welding procedures. Typical applications are pumps, valves, flanges, fittings, which may be used in service temperatures to as low as minus 175˚F [-115˚C].
Repairs by welding shall be made using procedures and welders qualified under ASTM A488 or in accordance with the ASME Boiler and Pressure Vessel Code, Section IX.
ASTM A352 - Steel Castings, Ferritic and Martensitic, for Pressure Containing Parts, Suitable for Low Temperature Service
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red of Area (%)
Charpy V-Notch (ft-b/˚F)
Typical Hardness
HBWC Mn Si Cr Ni Mo
Approx. Material
TypeUNS
Tacoma Alloy
(d)
LCA QT 60-85 30 24 35 13/-25 170 .25(e) 0.7 0.6 0.5 0.5 0.2 1015 J02504 715
LCB QT 65-90 35 24 35 13/-50 180 .30(e) 1.0 0.6 0.5 0.5 0.2 1015 J03003 715
LCC QT 70-95 40 22 35 15/-50 180 .25(e) 1.2 0.6 0.5 0.5 0.2 1015 J02505 715
LC1 QT 65-90 35 24 35 13/-75 180 0.25 .50-.80 0.6 .45-.65 4010 J12522 801
LC2 QT 70-95 40 24 35 15/-100 170 0.25 .50-.80 0.6 2-3 J22500 860
LC2-1 QT 105-130 80 18 30 30/-100 250 0.22 .55-.75 0.5 1.35-1.85 2.5-3.5 .30-.60 HY-80 J42215 864
LC3 QT 70-95 40 24 35 15/-150 190 0.15 .50-.80 0.6 3-4 J31550 861
LC4 QT 70-95 40 24 35 15/-175 190 0.15 .50-.80 0.6 4-5 J41500 862
LC9 QT 85 75 20 30 20/-320 215 0.13 0.9 0.45 0.5 8.5-10.0 0.2 9 Ni Steel J31300
CA6NM NT 110-135 80 15 35 20/-100 241 - 286 0.06 1.0 1.0 11.5-14.0 3.5-4.5 .4-1.0 J91540 903
Chemical Composition % - Range or Maximum Alloy DesignationMechanical Property Minimum or Range
Grade Heat Treat-ment (a)
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 12
ASTM A356 – Steel Castings, Carbon, Low Alloy, and Stainless Steel, Heavy-Walled for Steam Turbines
These alloys are designed for use in “heavy-wall” castings for steam turbine applications. Chemical compositions and heat treating parameters are quite restrictive. These grades may be subjected to microstructural requirements, as agreed between purchaser and manufacturer. The specification lists
minimum preheat temperatures for repair welding.
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red of Area (%)
Typical Hardness HBW
C Mn Si Cr Mo OtherApprox. Material
TypeUNS
Tacoma Alloy
(d)
1 NT 70 36 20 35 150 .35(e) 0.7 0.6 1023 J03502 725
2 NT 65 35 22 35 155 .25(e) 0.7 0.6 .45-.65 4017 J12523 802
5 NT 70 40 22 35 170 .25(e) 0.7 0.6 .40-.70 .40-.60 J12540 826
6 NT 70 45 22 35 180 0.2 .50-.80 0.6 1-1.5 .45-.65 1 1/4 Cr 1/2 Mo J12073 853, 851
8 NT 80 50 18 45 200 0.2 .50-.90 .20-.60 1-1.5 .90-1.2 V.05-.15 J11697 849
9 NT 85 60 15 45 200 0.2 .50-.90 .20-.60 1-1.5 .90-1.2 V.20-.35 J21610 850
10 NT 85 55 20 35 200 0.2 .50-.80 0.6 2.0-2.75 .90-1.2 2 1/4 Cr 1Mo
J22090 857, 852, 854
CA6NM NT 110 80 15 35 269 0.06 1.0 1.0 11.5-14.0 .40-1.0 Ni 3.5-4.5 J91540 903
ASTM A356 - Steel Castings, Carbon, Low Alloy, and Stainless Steel, Heavy-Walled for Steam Turbines
Grade Heat Treat-ment (a)
Alloy DesignationChemical Composition % - Range or MaximumMechanical Property Requirements (b)
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 13
ASTM A389 – Steel Castings, Alloy, Specially Heat-Treated, for Pressure-Containing Parts, Suitable for High-Temperature Service
The two grades covered by this specification represent materials that are generally suitable for assembly with other castings or wrought steel parts by fusion welding.
Typical applications include valves, flanges, fittings and other pressure-containing parts. The use of chromium, molybdenum and vanadium results in a need to preheat for welding. Repairs by welding shall be made using procedures and welders qualified under ASTM A488 or in accordance with the ASME Boiler and
Pressure Vessel Code, Section IX.
ASTM A447 – Steel Castings, Chromium-Nickel-Iron Alloy (25Cr-12Ni Class), for High-Temperature Service This specification covers “iron-base” chrome-nickel heat resistant castings used for structural elements, containers, and supports in electric
furnaces, petroleum still tube supports, and for similar applications in temperatures up to 2000˚F [1093˚C]. The user should inform the producer when the service temperature will exceed 1800˚F (980˚C) Type I and II vary in their magnetic permeability requirements Type I Alloys are characterized by relatively low creep stress between 1500˚F – 2000˚F (815˚C – 1095˚C) and high ductility at ambient
temperature after aging for short periods between 1300˚F -1500˚F (705˚C – 815˚C). Type II alloys have relatively high limiting creep stress, but may develop low ductility at ambient temperature when periods between 1350˚F
-1500˚F (730˚C – 815˚C). These alloys are poured at the London Ontario foundry only.
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red of Area (%)
Typical Hardnes
s BHW
C Mn Si Cr Mo VApprox. Material
TypeUNS
Tacoma Alloy
(d)
C23 NT 70 40 18 35 170 0.20 0.30-0.80 0.60 1.0-1.5 0.45-0.65 0.15-0.25 J12080 ~851
C24 NT 80 50 15 35 200 0.20 0.30-0.80
0.60 0.8-1.25 .9-1.2 0.15-0.25 J12092 ~ 848
ASTM A389 - Steel Castings, Alloy, Specially Heat-Treated, for Pressure Containing Parts, Suitable for High Temperature Service
Grade Heat
Treatment (a)
Alloy DesignationMechanical Property Requirements (b) Chemical Composition % - Range or Maximum
ASTM A447 - Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service. Produced in London.
Tensile (ksi)
Elong in 2" (%)
Typical Hardness
BHWC Mn Si Cr Ni Nitrogen
Approx. Material
TypeUNS
London Alloy
(d)
Type I C 80 9 180 .20-.45 2.5 1.75 23-28 10-14 0.2 309 J93303 London
Type II C 80 4 180 .20-.45 2.5 1.75 23-28 10-14 0.2 309 J93303 London
Mech. Prop. Req. (b) Chemical Composition % - Range or MaximumGrade (PW)
Heat Treatment
(a)
Alloy Designation
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 14
ASTM A487 – Steel Castings Suitable for Pressure Service
This specification covers low alloy steels and martensitic stainless steels in the normalized and tempered, or quenched and tempered condition, suitable for pressure-containing parts.
The weldability of the classes in this specification varies from readily weldable to weldable only with adequate precautions. Chemical compositions are highly restrictive. Charpy impact values may become a part of the requirements when so specified in the procurement documents. Repairs by welding shall be made using procedures and welders qualified under ASTM A488 or in accordance with the ASME Boiler and
Pressure Vessel Code, Section IX. CA6NM appears as two classes: A and B.
o CA6NM Class B is designed to meet softer NACE hardness requirements (see Table 3 near the end of this document). When ordering Class B the customer should specify a 0.03% carbon maximum. This will ensure that they receive a chemistry that is able to meet the low NACE hardness.
CA6NM is preferred over CA15.
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red of Area
%
HBW Max C Mn Si Cr Ni Mo
Approx. Material
TypeUNS
Tacoma Alloy
(d)
A NT 140-170 110-130 10 25 25
B 90-115 65 18 30 30
C 90 60 18 35 35
D 100 75 17 35 35
CA6NM A NT 110 80 15 35 241 - 285 typical
0.06 1.0 1.0 11.5-14.0 3.5-4.5 .4-1.0 903 903
CA6NM B N + Double T 100 75 17 35 255 0.06 1.0 1.0 11.5-14.0 3.5-4.5 .4-1.0 909 909
ASTM A487 - Steel Castings Suitable for Pressure Service
Grade ClassHeat
Treatment (a)
Mechanical Property Requirements (b) Chemical Composition % - Range or Maximum Alloy Designation
CA15 0.15 1.0 1.5 11.5-14.0 0.15 - 1.0 0.50 900 900
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 15
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red of Area (%)
HBW Max C Mn Si Cr Ni Mo Other
Approx. Material
TypeUNS
Tacoma Alloy
(d)
1 A NT 85-110 55 22 40 0.3 1.0 0.8 V.04-.12 J13002 1 B QT 90-115 65 22 45 0.3 1.0 0.8 V.04-.12 J13002
1 C NT or QT 90 65 22 45 235 0.3 1.0 0.8 V.04-.12 J13002 2 A NT 85-110 53 22 35 0.3 1.0-1.4 0.8 .10-.30 4023 J13003 721
2 B QT 90-115 65 22 40 0.3 1.0-1.4 0.8 .10-.30 J13003 7212 C NT or QT 90 65 22 40 235 0.3 1.0-1.4 0.8 .10-.30 J13003 721
4 A NT or QT 90-115 60 18 40 0.3 1.0 0.8 .40-.80 .40-.80 .15-.30 8625 J13047 831, 8384 B QT 105-130 85 17 35 0.3 1.0 0.8 .40-.80 .40-.80 .15-.30 8625 J13047 831, 838
4 C NT or QT 90 60 18 35 235 0.3 1.0 0.8 .40-.80 .40-.80 .15-.30 8625 J13047 831, 8384 D QT 100 75 17 35 235 0.3 1.0 0.8 .40-.80 .40-.80 .15-.30 8625 J13047 831, 838
4 E QT 115 95 15 35 0.3 1.0 0.8 .40-.80 .40-.80 .15-.30 8625 J13047 831, 8386 A NT 115 80 18 30 .05-.38 1.3-1.7 0.8 .40-.80 .40-.80 .30-.40 J13855
6 B QT 120 95 12 25 .05-.38 1.3-1.7 0.8 .40-.80 .40-.80 .30-.40 J13855 7 A QT 115 100 15 30 .05-.20 .6-1.0 0.8 .40-.80 .70-1.0 .40-.60 J12084
8 A NT 85-110 55 20 35 .05-.20 .50-.90 0.8 2.0-2.75 .90-1.1 J22091 857 mod.
8 B QT 105 85 17 30 .05-.20 .50-.90 0.8 2.0-2.75 .90-1.1 J22091 857 mod.
8 C QT 100 75 17 35 235 .05-.20 .50-.90 0.8 2.0-2.75 .90-1.1 J22091 857 mod.
9 A NT or QT 90 60 18 35 .05-.33 .60-1.0 0.8 .75-1.1 .15-.30 4125 J13345 837
9 B QT 105 85 16 35 .05-.33 .60-1.0 0.8 .75-1.1 .15-.30 4125 J13345 8379 C NT or QT 90 60 18 35 235 .05-.33 .60-1.0 0.8 .75-1.1 .15-.30 4125 J13345 837
9 D QT 100 75 17 35 235 .05-.33 .60-1.0 0.8 .75-1.1 .15-.30 4125 J13345 837 9 E QT 115 95 15 35 .05-.33 .60-1.0 0.8 .75-1.1 .15-.30 4125 J13345 837
10 A NT 100 70 18 35 0.3 .60-1.0 0.8 .55-.90 1.4-2.0 .20-.40 4320 J23015 ~841, 833 10 B QT 125 100 15 35 0.3 .60-1.0 0.8 .55-.90 1.4-2.0 .20-.40 4320 J23015 ~841, 833
11 A NT 70-95 40 20 35 .05-.20 .50-.80 0.6 .50-.80 .70-1.1 .45-.65 J12082
11 B QT 105-130 85 17 35 .05-.20 .50-.80 0.6 .50-.80 .70-1.1 .45-.65 J12082
12 A NT 70-95 40 20 35 .05-.20 .40-.70 0.6 .50-.90 .60-1.0 .90-1.2 J12082
12 B QT 105-130 85 17 35 .05-.20 .40-.70 0.6 .50-.90 .60-1.0 .90-1.2 J12082
13 A NT 90-115 60 18 35 0.3 .80-1.1 0.6 1.4-1.75 .20-.30 834 w/o V J13060
13 B QT 105-130 85 17 35 0.3 .80-1.1 0.6 1.4-1.75 .20-.30 834 w/o V J13060
16 A NT 70-95 40 22 35 0.12 2.1 0.5 1.0-1.4 J31200
ASTM - A487 Steel Castings Suitable for Pressure Service - Continued
Grade ClassHeat
Treatment (a)
Mechanical Property Requirements (b) Chemical Composition % - Range or Maximum Alloy Designation
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 16
ASTM A494 – Castings, Nickel and Nickel Alloy This specification covers nickel, nickel-copper, nickel-copper-silicon, nickel-molybdenum, nickel-chromium and nickel-molybdenum-chromium
alloy castings for corrosion-resistant service. Some grades may not be repair welded. Some grades may require a post weld heat treatment after major repair welds.
o If this is required, then specify Class 1. o If post weld heat treatment is not required, then specify Class 2, along with the grade.
London and Chehalis make most of these grades. Some grades are not available as sand castings. See table below. Tacoma makes CW6MC (Inconel 625) and M35-1 (Monel) using the AOD. Minimum heat size is 12,000 lb.
Tensile ksi
Yield ksi
Elong in 2"
%
Typical Hardness
HBWC Mn Si Cr Ni Mo NB Other
Approx. Material Type (d)
UNSTacoma
Alloy (d)
CY-40 Q 70 28 30 <200 0.4 1.5 3 14-17 balance Fe 11.0 max.
Inconel 600 N06040 523
CW-6M Q 72 40 25 <200 0.07 1 1 17-20 balance 17-20 Fe 3.0 max. Chlorimet 3 N30107 544
CW-2M Q 72 40 20 <200 0.02 1 0.8 15-17.5 balance 15-17.5 Fe 2.0 max.
Hastelloy C4C
N26455 546
CW-6MC Q 70 40 25 <200 0.06 1 1 20-23 balance 8-10 3.15-4.5 Fe 5.0 max.
Inconel 625 N26625 522
CU5MCuC Q 75 35 20 <200 0.05 1 1 19.5-23.5
38-44 2.5-3.5 Cu 1.5-3.5 Incoloy 825 N28826 507
ASTM A494 Castings, Nickel and Nickel AlloyGrade
Nickel - Molybdenum
Heat Treatment
(a)
Alloy DesignationMechanical Property Requirements (b) Chemical Composition % - Range or Maximum
Tensile ksi
Yield ksi
Elong in 2"
%
Typical Hardness
HBWC Mn Si Cr Ni Cu NB Other
Approx. Material Type (d)
UNS Tacoma Alloy
CZ-100 C 50 18 10 <200 1.0 1.5 2.0 95.0 min 1.25 Fe 3.0 max 210 N02100 501
M35-1 C 65 25 25 <200 0.35 1.5 1.25 balance 26-33 Fe 3.5 Max Monel QQ-N-268-A
N24135 510
M35-2 C 65 30 25 <200 0.35 1.5 2.0 balance 26-33 Fe 3.5 Max Monel 410 N24020 510
M30-H C 100 60 10 0.3 1.5 2.7-3.7 balance 26-33 Fe 3.5 Max QQ-N-288-B N24030
M25S C — — — 300 min age
0.25 1.5 3.5-4.5 balance 27-33 Fe 3.5 Max QQ-N-288-D N24025
M30C C 65 32.5 25 <200 0.3 1.5 1.0-2.0 balance 26-33 Fe 3.5 Max QQ-N-288-D NB Monel 411 N24130 512
ASTM A494 - Castings, Nickel and Nickel AlloyGrade
Nickel & Nickel Copper
Heat Treatment
(a)
Chemical Composition % - Range or Maximum Alloy DesignationMechanical Property Requirements (b)
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 17
ASTM A743 – Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application
This specification covers stainless steel castings suitable for a broad range of applications intended for a wide variety of corrosive environments.
When the application requires stainless steel for severe corrosion resistant service, reference should be made to specification A744. The proper balance of chemical composition is very important to the performance of these alloys. Cast austenitic stainless steel is weldable
because it contains at least 5% ferrite. It is recommended that the producer be fully aware of the intended use of the material so that he may verify the suitability of the alloy
specified, e.g. saltwater applications are best addressed with duplex stainless steel instead of austenitic stainless steel. It is important that the producer be aware of the weldability requirements for these materials, as well as those cases in severe corrosive
environments. Both CA15 and CA6NM are martensitic alloys, however CA6NM has superior castability, weldability, toughness, and resistance to cracking
and cavitation than the CA15 grade. Tacoma prefers CA6NM over CA15. Castings made from CA6NM have found widespread use in many pumping applications. In general, most of these alloys have welding characteristics ranging from “fair” to “excellent.” The use of carefully engineered welding procedures, proper electrodes, and qualified welding operators is very important to the successful
function of the welded parts. In particular, this is true where corrosive media are concerned, since stress corrosion or porosity caused by improper welds can lead to
accelerated corrosion attack. There are supplementary requirements that may be specified when desired by the purchaser including:
Unavailable grades from ASTM A494 Castings, Nickel and Nickel Alloy - Not Available
Tensile ksi
Yield ksi
Elong in 2"
%C Mn Si Cr Ni Mo W V Other
Approx. Material Type (d)
UNS Tacoma Alloy (d)
CX2MW Q 80 45 30 0.02 1.0 0.8 20-22.5 balance 12.5-14.5 2.5-3.5 Fe 2-6 Hastelloy C-22
N26022 Not available Due to high W content
CW-12MW Q 72 40 4 0.12 1.0 1.0 15.5-17.5
balance 16-18 3.75-5.25 .2-.4 Fe 4.5-7.5 Hastelloy C N30002 Not Available due to high W & V content
CY5SnBiM C — — — 0.05 1.5 0.5 11-14 balance 2-3.5 Fe 2.0 max. Bi 3-
N26055 Not Available due to high Bi & Sn content
N-12MV Q 76 40 6 0.12 1.0 1.0 1.0 balance 26-30 .2-.6 Fe 4-6 Hastelloy B N30012 Not Available in thicknesses over 3"
N-7M Q 76 40 20 0.07 1.0 1.0 1.0 balance 30-33 Fe 3.0 max. Chlorimet 2 N30007 Not Available in
thicknesses over 3"
Grade
Chemical Composition % - Range or MaximumMechanical Property Requirements (b) Alloy DesignationHeat Treatment
(a)
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 18
o Corrosion and hardness tests – Supplements S11, S14 o Nondestructive examination – Supplements S1, S2, S3, S4 o Low Ferrite in CF8 – Supplement S15 o Tension Test – Supplement S12 o Approval of Major Weld Repair, PWHT of Majors – Supplements S11, S13
ASTM A743 - Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red of Area
%
Typical Hardnes
s HBW
C Mn Si Cr Ni Mo OtherApprox. Material
TypeUNS
Tacoma Alloy
(d)
CF8 Q 70(A) 30(A) 35 -- 160 0.08 1.5 2.0 18-21 8-11 304 J92600 910
CG12 Q 70 28 35 -- 180 0.12 1.5 2.0 20-23 10-13 J93001
CF20 Q 70 30 30 -- 180 0.2 1.5 2.0 18-21 8-11 J92602
CF8M Q 70 30 30 -- 180 0.08 1.5 2.0 18-21 9-12 2-3 316 J92900 920
CF8C Q 70 30 30 -- 180 0.08 1.5 2.0 18-21 9-12 (B) 347 J92710 916
CF16F Q 70 30 25 -- 180 0.16 1.5 2.0 18-21 9-12 1.5 Se .2-.35 J92701
CF16Fa Q 70 30 25 -- -- 0.16 1.5 2.0 18-21 9-12 .4-.8 S .2-.4 --
CH10 Q 70 30 30 -- 180 0.1 1.5 2.0 22-26 12-15 309L J93401 930
CH20 Q 70 30 30 -- 180 0.2 1.5 2.0 22-26 12-15 309 J93402 Hi C 930
CK20 Q 65 28 30 -- 160 0.2 2 2.0 23-27 19-22 310 J94202 940
CE30 Q/FA 80 40 10 -- 240 0.3 1.5 2.0 26-30 8-11 J93423 932
CA15 NT 90 65 18 30 241 Max 0.15 1.0 1.5 11.5-14 1.0 0.5 410 J91150 900
CA15M NT 90 65 18 30 241 Max 0.15 1.0 0.65 11.5-14 1.0 .15-1.0 J91151 902
CB30 NT 65 30 -- -- 241 Max 0.3 1.0 1.5 18-21 2.0 431 J91803
CC50 NT 55 -- -- -- 241 Max 0.5 1.0 1.5 26-30 4.0 446 J92615
CA40 NT 100 70 15 25 240 .20-.40 1.0 1.5 11.5-14 1.0 0.5 420 J91153 901
CA40F NT 100 70 12 -- -- .20-.40 1.0 1.5 11.5-14.0 1.0 0.5 S .2-.4 420F J91154
CF3 Q 70 30 35 -- 150 0.03 1.5 2.0 17-21 8-12 304L J92500 911
CF10SMnN Q 85 42 30 -- -- 0.1 7.0-9.0 3.5-4.5 16-18 8-9 N .08-.18 Nitronic 60 J92972 919
(A) = Grade CF8: for low ferrite or nonmagnetic castings: tensile strength minimum is 65 ksi and yield point minimum is 28 ksi.(B) = Grade CF8C shall have a columbium content of not less than eight times the carbon content and not more than 1.0%.If a columbium-plus-tantalum alloy in the approximate Cb: Ta ratio of 3:1 is used for stabilizing this grade, the total Cb-plus-Ta content shall not be less than nine timesthe carbon content and not exceed 1.1%.
Alloy DesignationHeat
Treatment (a)
Mechanical Property Requirements (b)
Grade
Chemical Composition % - Range or Maximum
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 19
ASTM A743 - Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application - Continued
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red of Area (%)
Typical Hardnes
s HBW
C Mn Si Cr Ni Mo OtherApprox. Material
TypeUNS
Tacoma Alloy
(d)
CG3M Q 75 35 25 -- 200 0.03 1.5 1.5 18-21 9-13 3-4 317L J92999 914
CG8M Q 75 35 25 -- 200 0.08 1.5 1.5 18-21 9-13 3-4 317 J93000 923
CN3M Q 63 25 30 -- -- 0.03 2.0 1.0 20-22 23-27 4.5-5.5 IN-862 J94652 947
CN3MN Q 80 38 35 -- -- 0.03 2.0 1.0 20-22 23.5-25.5 6-7 N.18-.26 S.01 Cu.75 AL-6XN J94651 949
CN7M Q 62 25 35 -- 130 0.07 1.5 1.5 19-22 27.5-30.5 2-3 Cu 3-4 Alloy 20 N08007 948
CN7MS Q 70 30 35 -- 150 0.07 1.0 2.5-3.5 18-20 22-25 2.5-3 Cu 1.5-2 Worthite J94650
CA6NM NT 110 80 15 35 260 0.06 1.0 1.0 11.5-14 3.5-4.5 .40-1 13-4 J91540 903
CA6N NT 140 135 15 50 300 0.06 0.5 1.0 10.5-12.5 6-8 IN-833 J91650
CA28MWV NT 140 110 10 24 -- 20-.28 .50-1.0 1.0 11.0-12.5 .50-1.0 .90-1.25 W .9-1.25 V .2-.3 422 J91422
CK3MCuN Q 80 38 35 -- -- 0.025 1.2 1.0 19.5-20.5 17.5-19.5 6-7 Cu .5-1.0 N .18-.24 S .01 254SMO J93254 951
CK35MN Q 83 41 35 -- -- 0.035 2.0 1.0 22-22 6-8 N .21-.32 Cu .40
CB6 FA & T 115 85 16 35 -- 0.06 1.0 1.0 15.5-17.5 3.5-5.5 .50 Virgo 38 J91804
CF3M Q 70 30 30 -- 190 0.03 1.5 1.5 17-21 9-13 2-3 316L J92800 921
CF3MN Q 75 37 35 -- -- 0.03 1.5 1.5 17-22 9-13 2-3 N .10-.20 316LN J92804 929
CG6MMN Q 85 42 30 -- -- 0.06 4.0-6.0 1.0 20.5-23.5 11.5-13.5 1.5-3.0 Cb .1-.3 V .1-.3 N .2-.4 Nitronic 50 J93790 917
Grade
Chemical Composition % - Range or Maximum Alloy DesignationMechanical Property Requirements (b)Heat
Treatment (a)
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 20
ASTM A744 – Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service This specification covers stainless steel alloys that are intended for particularly demanding applications in more severe corrosion
environments that may be intended for A743 grades. Post weld heat treatments are of prime importance to ensure the best corrosion resistant condition for severe service. There are supplementary requirements that may be specified when desired by the purchaser including:
o NDT – Supplement S2, S3 o Corrosion – Supplement S21 o Tension Test – Supplement S22 o Surface Carbone Analysis – Supplement S23
(A) = Grade CF8: for low ferrite or nonmagnetic castings: tensile strength minimum is 65 ksi and yield point minimum is 28 ksi.
(B) = Grade CF8C shall have a columbium content of not less than eight times the carbon content and not more than 1.0%.
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Typical Hardness
BHWC Mn Si Cr Ni Mo Other
Approx. Material
TypeUNS
Tacoma Alloy
(d)
CF8 Q 70(A) 30(A) 35 160 0.08 1.5 2.0 18-21 8-11 304 J92600 910
CF8M Q 70 30 30 180 0.08 1.5 2.0 18-21 9-12 2-3 316 J92900 920
CF8C Q 70 30 30 180 0.08 1.5 2.0 18-21 9-12 (B) 347 J92710 916
CF3 Q 70 30 35 150 0.03 1.5 2.0 17-21 8-12 304L J92500 911
CF3M Q 70 30 30 190 0.03 1.5 1.5 17-21 9-13 2-3 316L J92800 921
CG3M Q 75 35 25 200 0.03 1.5 1.5 18-21 9-13 3-4 317L J92999 914
CG8M Q 75 35 25 200 0.08 1.5 1.5 18-21 9-13 3-4 317 J93000 923
CN7M Q 62 25 35 130 0.07 1.5 1.5 19-22 27.5-30.5 2-3 Cu 3-4 Alloy 20 N08007 948
CN7MS Q 70 30 35 140 0.07 1.0 2.5-3.5 18-20 22-25 2.5-3 Cu 1.5-2 Worthite J94650
CN3MN Q 80 38 35 130 0.03 2.0 1.0 20-22 23.5-25.5 6-7 N.18-.26 AL-6XN J94651 949
CK3MCuN Q 80 38 35 130 0.025 1.2 1.0 19.5-20.5 17.5-19.5 6-7 Cu .5-1.0 N .18 -.24 254SMO J93254 951
CN3MCu Q 62 25 35 130 0.03 1.5 1.0 19 - 22 27.5 - 30.5 Cu 3 - 3.5 J80020
ASTM A744 - Castings, Iron-Chromium-Nickel, Corrosion Residant for Severe Service
GradeHeat
Treatment (a)
Alloy DesignationChemical Composition % - Range or MaximumMechanical Property Requirements (b)
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 21
ASTM A747 – Steel Castings, Stainless, Precipitation Hardening Castings made under this specification are similar to the wrought precipitation hardening grades 15-5 PH and 17-4 PH. These castings may be used in services requiring corrosion resistance and high strengths at temperatures up to 600˚F, [315˚C]. They may be machined in the solution-annealed condition and subsequently precipitation hardened to the desired high-strength mechanical
properties, which depend upon the precipitation temperature used. This material is not intended for use in the solution-annealed condition. Time and temperature during heat treatment is very specific, along with the heat treatment condition of the casting prior to and after welding. When ordering this material, both the alloy type and precipitation hardening heat treatment condition must be specified on the purchase
order.
(A)=Nitrogen content to be determined and reported when specified by the order or contract at 0.05% maximum.
Tensile ksi
Yield (ksi)
Elong in 2"
%
Typical Hardness
BHNC Mn Si Cr Ni Cu N Other
Approx. Material Type (d)
UNSTacoma
Alloy (d)
CB7Cu-1 H900
S 170 145 5 375 Min 0.07 0.7 1.0 15.5-17.7 3.6-4.6 2.5-3.2 (A) Cb .15-.35 17-4PH J92180 954
CB7Cu-1 H925 S 175 150 5 375 Min 0.07 0.7 1.0 15.5-17.7 3.6-4.6 2.5-3.2 (A) Cb .15-.35 17-4PH J92180 955
CB7Cu-1 H1025 S 150 140 9 311 Min 0.07 0.7 1.0 15.5-17.7 3.6-4.6 2.5-3.2 (A) Cb .15-.35 17-4PH J92180 955
CB7Cu-1 H1075
S 145 115 9 277 Min 0.07 0.7 1.0 15.5-17.7 3.6-4.6 2.5-3.2 (A) Cb .15-.35 17-4PH J92180 955
CB7Cu-1 H1100 S 135 110 9 269 Min 0.07 0.7 1.0 15.5-17.7 3.6-4.6 2.5-3.2 (A) Cb .15-.35 17-4PH J92180 955
CB7Cu-1 H1150 S 125 97 10 269 Min 0.07 0.7 1.0 15.5-17.7 3.6-4.6 2.5-3.2 (A) Cb .15-.35 17-4PH J92180 955
CB7Cu-1 H1150M S 310 Max 0.07 0.7 1.0 15.5-17.7 3.6-4.6 2.5-3.2 (A) Cb .15-.35 17-4PH J92180 955
CB7Cu-1 H1150DBL
S 310 Max 0.07 0.7 1.0 15.5-17.7 3.6-4.6 2.5-3.2 (A) Cb .15-.35 17-4PH J92180 955
CB7Cu-2 H900
S 170 145 5 375 Min 0.07 0.7 1.0 14.0-15.5 4.5-5.5 2.5-3.2 (A) Cb .15-.35 15-5PH J92110
CB7Cu-2 H925 S 175 150 5 375 Min 0.07 0.7 1.0 14.0-15.5 4.5-5.5 2.5-3.2 (A) Cb .15-.35 15-5PH J92110 952
CB7Cu-2 H1025
S 150 140 9 311 Min 0.07 0.7 1.0 14.0-15.5 4.5-5.- 2.5-3.2 (A) Cb .15-.35 15-5PH J92110 952
CB7Cu-2 H1075
S 145 115 9 277 Min 0.07 0.7 1.0 14.0-15.5 4.5-5.5 2.5-3.2 (A) Cb .15-.35 15-5PH J92110 952
CB7Cu-2 H1100 S 135 110 9 269 Min 0.07 0.7 1.0 14.0-15.5 4.5-5.5 2.5-3.2 (A) Cb .15-.35 15-5PH J92110 952
CB7Cu-2 H1150 S 125 97 10 269 Min 0.07 0.7 1.0 14.0-15.5 4.5-5.5 2.5-3.2 (A) Cb .15-.35 15-5PH J92110 952
CB7Cu-2 H1150M
S 310 Max 0.07 0.7 1.0 14.0-15.5 4.5-5.5 2.5-3.2 (A) Cb .15-.35 15-5PH J92110 952
CB7Cu-2 H1150DBL S 310 Max 0.07 0.7 1.0 14.0-15.5 4.5-5.5 2.5-3.2 (A) Cb .15-.35 15-5PH J92110 952
ASTM A747-Steel Castings, Stainless, Precipitation Hardening
Grade Condition
Heat Treatment
(a)
Alloy DesignationMechanical Property Requirements (b) Chemical Composition % - Range or Maximum
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 22
ASTM A757 – Steel Castings, Ferritic and Martensitic, for Pressure-Containing and Other Applications, for Low-Temperature Service
This specification covers carbon and alloy steel castings for pressure containing and other applications intended primarily for petroleum and gas pipelines in areas subject to low-ambient temperatures.
Castings shall be heat treated by normalizing and tempering or liquid quenching and tempering. Hardenability of some grades may limit usable section size. All classes are weldable under proper conditions.
Charpy V-notch tests are required at temperatures ranging from -50˚F to -175˚F [-46˚C to -115˚C], depending on the grade chosen. Impact properties are required on both the heat-affected zone of the base metal and the weld metal of the welding procedure qualification test.
Test bar size varies, dependent upon customer requirements and casting section thickness. Repairs by welding shall be made using procedures and welders qualified under ASTM A488 or in accordance with the ASME Boiler and
Pressure Vessel Code, Section IX. Typical grades are A1Q and E3N, which are similar to ASTM A352 grade LCB and ASTM A743 grade CA6NM, respectively.
.
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red of Area (%)
Charpy V-Notch (ft•lbf/°F)
Typical Hardness
HBWC Mn Si Cr Ni Mo
Approx. Material
Type UNS
Tacoma Alloy
(d)
A1Q QT 65 35 24 35 13/-50 180 0.3 1.0 0.6 0.4 0.5 0.25 1015 J03002 715
A2Q QT 70 40 22 35 15/-50 180 .25(e) 1.2 0.6 0.4 0.5 0.25 1015 J02503 715
B2N, B2Q NT/QT 70 40 24 35 15/-100 180 0.25 .50-.80 0.6 0.4 2.0-3.0 0.25 LC2 J22501 860
B3N,B3Q NT/QT 70 40 24 35 15/-150 180 0.15 .50-.80 0.6 0.4 3.0-4.0 0.25 LC3 J31500 861
B4N, B4Q NT/QT 70 40 24 35 15/-175 180 0.15 .50-.80 0.6 0.4 4.0-5.0 0.25 LC4 J41501 862
C1Q QT 75 55 22 35 15/-50 190 0.25 1.2 0.6 0.4 1.5-2.0 .15-.30 4620 J12582 840
D1N1, D1Q1 NT/QT 85-115 55 20 35 (A) 220 0.2 .40-.80 0.6 2.0-2.75 0.5 .90-1.20 WC9 J22092 854
D1N2, D1Q2 NT/QT 95-125 75 18 35 (A) 230 0.2 .40-.80 0.6 2.0-2.75 0.5 .90-1.20 WC9 J22092 854
D1N3, D1Q3 NT/QT 105-135 85 15 30 (A) 240 0.2 .40-.80 0.6 2.0-2.75 0.5 .90-1.20 WC9 J22092 854
E1Q QT 90 65 22 40 30/-100 220 0.22 .50-.80 0.6 1.35-1.85 2.5-3.5 .35-.60 HY-65 J42220 864
E2N1 E2Q1 NT/QT 90-120 70 18 35 30/-100 230 0.2 .40-.70 0.6 1.5-2.0 2.75-3.90 .40-.60 HY-70 J42065 864
E2N2, E2Q2 NT/QT 105-135 85 15 30 20/-100 250 0.2 .40-.70 0.6 1.5-2.0 2.75-3.90 .40-.60 HY-80 J42065 864
E2N3, E2Q3 NT/QT 115-145 100 13 30 15/-100 270 0.2 .40-.70 0.6 1.5-2.0 2.75-3.90 .40-.60 HY-100 J42065 865
E3N NT 110 80 15 35 20/-100 255 0.06 1.0 1.0 11.5-14.0 3.5-4.5 .40-1.00 CA6NM J91550 903
ASTM A757- Steel Castings, Ferritic and Martensitic, for Pressure-Containing and Other Low Temperature Service Applications
Grade Heat
Treatment (a)
Chemical Composition % - Range or Max. Alloy DesignationMechanical Property Requirements (b)
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 23
ASTM A890 – Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application
The duplex stainless steel alloys offer a combination of enhanced mechanical properties and corrosion resistance when properly balanced in composition and properly heat-treated.
Ferrite levels are not specified. o Typical ferrite content is 35 to 65 percent with the balance austenite.
The composition of the deposited weld metal for repair welding may be similar to that of the casting or may be suitably alloyed to achieve the desired corrosion resistance and mechanical properties.
Nitrogen enhances resistance to corrosion, weldability, strength, castability, and processing. Nitrogen is required in all of the grades. Grade 1B, CD4MCuN, has a nitrogen content of 0.10 - 0.25%. The old 1A had no nitrogen range. 1A and CD4MCu were deleted from this
specification because duplex stainless steel requires nitrogen. 1C, 5A and 6A also impose chemistry restrictions, which include elements that enhance corrosion resistance. Grades with a PREN value of 40 or greater fall under the category of “Super Duplex” stainless steel. PREN stands for pitting resistance
number. The number is debatably an indicator of pitting resistance. Such controversy has prompted ASTM to indicate it is an equation without mention of pitting resistance. PREN = %Cr + 3.3% Mo + 16%N > 40.
Tensile ksi
Yield ksi
Elong in 2"
%
PRE (P) Typical/
MinimumC Mn Si Cr Ni Mo Cu Nitrogen Other
Approx. Material Type (d)
UNSTacoma
Alloy (d)
1B Q 100 70 16 34.9 0.04 1.0 1.0 24.5-26.5 4.7-6.0 1.7-2.3 2.7-3.3 10-.25 P, S
CD4MCuN 1.4517 (W) J93372 957
1C Q 100 65 25 >40.0 0.03 1.2 1.1 24.0-26.7 5.6-6.7 2.9-3.8 1.4-1.9 .22-.33 P, S CD3MCuN J93373 967
2A Q 95 65 25 39.6 0.08 1.0 1.5 22.5-25.5 8.0-11.0 3.0-4.5 .10-.30 P, S CE8MN J93345
3A Q 95 65 25 35.7 0.06 1.0 1.0 24.0-27.0 4.0-6.0 1.75-2.5 .15-.25 P, S CD6MN J93371 963
4A Q 90 60 25 35.4 0.03 1.5 1.0 21.0-23.5 4.5-6.5 2.5-3.5 1.0 .10-.30 P, S
CD3MN 1.4462 (W) J92205 959
5A Q 100 75 18 >40.0 0.03 1.5 1.0 24.0-26.0 6.0-8.0 4.0-5.0 .10-.30 P, S
CE3MN 1.4469 (W) J93404 958
6A Q 100 65 25 >40.0 0.03 1.0 1.0 24.0-26.0 6.5-8.5 3.0-4.0 0.5-1.0 .20-.30
P, S W 0.50-1.0 CD3MW CuN J93380 962
ASTM A890 - Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application
Grade Heat
Treatment (a)
Chemical Composition % - Range or MaximumMechanical Property Req. (b) Alloy Designation
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 24
ASTM A915 – Steel Castings, Carbon and Alloy, Chemical Requirements Similar to Standard Wrought Grades
This specification covers carbon and low alloy steel castings having chemical analyses similar to that of the AISI standard wrought grades. The chemistry varies slightly from the wrought AISI limits to accommodate the casting process without detriment to the material properties. This specification only shows chemical requirements. The purchaser must specify the choice of heat treatment or hardness range or mechanical properties if required.
o A list of supplementary requirements is included in the specification to assist the purchaser. o Use A958 if mechanical properties are required for the same grades that are listed in A915.
(A) = If mechanical properties are required, use ASTM A958.
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red of Area (%) C Mn P S Si Ni Cr Mo
Approx. Material Type (d) UNS
Tacoma Alloy
SC 1020 AN NT/QT .18-.23 .40-.80 0.04 0.04 .30-.60 1020 J02003 720 (B)
SC 1025 AN NT/QT .22-.28 .40-.80 0.04 0.04 .30-.60 1025 J02508 725 (B)
SC 1030 AN NT/QT .28-.34 .50-.90 0.04 0.04 .30-.60 1030 J03012 730
SC 1040 AN NT/QT .37-.44 .50-.90 0.04 0.04 .30-.60 1040 J04003 740
SC 1045 AN NT/QT .43-.50 .50-.90 0.04 0.04 .30-.60 1045 J04502 745
SC 4130 AN NT/QT .28-.33 .40-.80 0.035 0.04 .30-.60 .80-1.1 .15-.25 4130 J13502 821
SC 4140 AN NT/QT .38-.43 .70-1.1 0.035 0.04 .30-.60 .80-1.1 .15-.25 4140 J14045 827
SC 4330 AN NT/QT .28-.33 .60-.90 0.035 0.04 .30-.60 1.65-2.0 .70-.90 .20-.30 4330 J23259
SC 4340 AN NT/QT .38-.43 .60-.90 0.035 0.04 .30-.60 1.65-2.0 .70-.90 .20-.30 4340 J24053
SC 8620 AN NT/QT .18-.23 .60-1.0 0.035 0.04 .30-.60 .40-.70 .40-.60 .15-.25 8620 J12095 839
SC 8625 AN NT/QT .23-.28 .60-1.0 0.035 0.04 .30-.60 .40-.70 .40-.60 .15-.25 8625 J12595 831 (B)
SC 8630 AN NT/QT .28-.33 .60-1.0 0.035 0.04 .30-.60 .40-.70 .40-.60 .15-.25 8630 J13095 829
ASTM A915-93 Steel Castings, Carbon and Alloy, Chemical Requirments Similar to Standard Wrought Grades. (A)
Grade Heat
Treatment (a)
Chemical Composition % - Range or Maximum Alloy DesignationMechanical Property Requirements (b)
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 25
ASTM A958 – Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements Similar to Standard Wrought Grades
This specification covers carbon and low alloy steel castings having chemical analyses similar to that of the A151 standard wrought grades. The wrought grade would have lower silicon content.
When selecting the material, it is necessary to select both a grade and class of steel. o The grade designates the chemical composition o The class designates the tensile requirements.
Included in the specification, is a table showing tensile requirements/grade suitability to assist the user in selection of a grade that will be suitable to achieve the desired tensile properties.
ASTM A958 - Steel Castings, Carbon and Alloy, with Tensile Requirments, Chemical Requirements Similar to Standard Wrought Grades
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Red of Area (%)
C Mn P S Si Ni Cr MoApprox. Material
TypeUNS
Tacoma Alloy
(d)
SC 1020 0.18-0.23 0.40-0.80
0.04 0.04 0.30-0.60 — — — 1020 J02003 720
SC1025 0.22-0.28 0.40-0.80
0.04 0.04 0.30-0.60 — — — 1025 J02508 725
SC1030 0.28-0.34 0.50-0.90
0.04 0.04 0.30-0.60 — — — 1030 J03012 730
SC 1040 0.37-0.44 0.50-0.90 0.04 0.04 0.30-0.60 — — — 1040 J04003 740
SC 1045 0.43-0.50 0.50-0.90
0.04 0.04 0.30-0.60 — — — 1045 J04502 745
SC 4130 0.28-0.33 0.40-0.80 0.035 0.04 0.30-0.60 — 0.80-1.10 0.15-0.25 4130 J13502 821
SC 4140 0.38-0.43 0.70-1.10
0.035 0.04 0.30-0.60 — 0.80-1.10 0.15-0.25 4140 J14045 827
SC 4330 0.28-0.33 0.60-0.90
0.035 0.04 0.30-0.60 1.65-2.00 0.70-0.90 0.20-0.30 4330 J23259
SC 4340 0.38-0.43 0.60-0.90 0.035 0.04 0.30-0.60 1.65-2.00 0.70-0.90 0.20-0.30 4340 J24053
SC 8620 0.18-0.23 0.60-1.00 0.035 0.04 0.30-0.60 0.40-0.70 0.40-0.60 0.15-0.25 8620 J12095 839
SC 8625 0.23-0.28 0.60-1.00
0.035 0.04 0.30-0.60 0.40-0.70 0.40-0.60 0.15-0.25 8625 J12595 831
SC 8630 0.28-0.33 0.60-1.00 0.035 0.04 0.30-0.60 0.40-0.70 0.40-0.60 0.15-0.25 8630 J13095 829
Grade
Chemical Composition % - Range or Maximum Alloy DesignationMechanical Property Requirements (b)Heat Treatment
(a)
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 26
A958 Class / Strength
Guidelines for Grade and Class
“B” Denotes that the properties may be achieved by at least one of the heat treatments referenced in Section 5 of A958.
“C” These grades significantly exceed the minimum strength levels;
Class 65/35 70/36 80/40 80/50 90/60 105/85 115/95 130/115 135/125 150/135 160/145 165/150 210/180 Tensile min. (ksi) 65 70 80 80 90 105 115 130 135 150 160 165 210
Yield min. (ksi) 35 36 40 50 60 85 95 115 125 135 145 150 180
El in 2in. min, (%) 24 22 18 22 18 17 14 11 9 7 6 5 4
Reduction of area, min, (%) 35 30 30 35 35 35 30 25 22 18 12 10 8
A958 Tensile Requirements
65/35 70/36 80/40 80/50 90/60 105/85 115/95 130/115 135/125 150/135 160/145 165/150 210/180 �SC 1020 B B SC 1025 B B SC 1030 B B B B SC 1040 B, C B B B B SC 1045 B, C B, C B B B B B SC 4130 B, C B, C B B B B B B B B SC 4140 B, C B, C B, C B, C B B B B B B B B SC 4330 B, C B, C B, C B, C B B B B B B B B B SC 4340 B, C B, C B, C B, C B, C B B B B B B B B SC 8620 B, C B, C B B B B B SC 8625 B, C B, C B B B B B B B SC 8630 B, C B, C B B B B B B B B
A958 Tensile Requirements/Grade Suitability
Grade Class
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 27
ASTM A990 – Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially Controlled for Pressure Retaining Parts for Corrosive Service
This specification covers iron-nickel-chromium and nickel alloy castings specially processed with the following requirements: o Restricted melt practices. o Weldability testing of specially cast test coupon (per heat). o Nondestructive examination (NDE).
These alloy grades possess varying degrees of suitability for service in corrosive environments. It is the responsibility of the purchaser to determine which grade shall be furnished.
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
C Mn Si Cr Ni Mo Fe Max Cu OtherApprox. Material
TypeUNS
Tacoma Alloy
(d)
CW2M Q 72 40 20 0.020 1.0 0.8 15.0-17.5
balance 15.0-17.5 2.0 W 1.0 N30107 546
CN3MCu Q 62 25 35 0.03 1.5 1.0 19.0-22.0
27.5-30.5
2.0-3.0 balance 3.0-3.5
CK3MCuN Q 80 38 35 0.025 1.2 1.0 19.5-20.5
17.5-19.5 6-7 balance .5-1.0 J93254
254SMO 951
M35-1 C 65 25 25 0.35 1.5 1.25 balance 3.5 26 - 33 Monel 510
CW2MC Q 70 40 25 0.060 1.0 1.0 20-23 balance 8-10 Fe 5.0 max.
V 0.2 Inconel 625, N26625
522
N2M Q 76 40 20 0.02 1.0 0.8 1.0 balance 30-33 3.0 0.2 W 0.2 V 0.2
Not Available
ASTM A990 - Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially Controlled for Pressure Retaining Parts for Corrosive Service
Grade Heat Treat-ment (a)
Chemical Composition % - Range or Maximum Alloy DesignationMechanical Property Req. (b)
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 28
ASTM A995 – Castings, Austenitic-Ferritic (Duplex) Stainless Steel, for Pressure-Containing Parts This specification covers austenitic-ferritic (duplex) stainless steel castings for valves, flanges, fittings, and other pressure-containing parts. These offer a combination of enhanced mechanical properties and corrosion resistance when properly balanced in composition and properly
heat-treated. It is the responsibility of the purchaser to determine which grade shall be furnished.
PREN = Pitting Resistance Equivalent = %Cr + 3.3 x %Mo + 16 x %N - (W) = Werkstoff Number of Federal Republic of Germany
Tensile (ksi)
Yield (ksi)
Elong in 2" (%)
Typical Min C Mn Si Cr Ni Mo Cu W NitrogenApprox. Material
Type UNS
Tacoma Alloy
(d)
1B Q 100 70 16 34.9 -- 0.04 1.0 1.0 24.5-26.5
4.7-6.0 1.7-2.3 2.7-3.3 .10-.25 CD4MCuN 1.4517 J93372 957
2A Q 95 65 25 39.6 -- 0.08 1.0 1.5 22.5-25.5
8.0-11.0 3.0-4.5 .10-.30 CE8MN J93345
3A Q 95 65 25 35.7 -- 0.06 1.0 1.0 24.0-27.0 4.0-6.0 1.75-2.5 .15-.25 CD6MN J93371 963
4A Q 90 60 25 35.4 -- 0.03 1.5 1.0 21.0-23.5
4.5-6.5 2.5-3.5 1.0 .10-.30 CD3MN 1.4462 J92205 959
5A Q 100 75 18 43.1 40 0.03 1.5 1.0 24.0-26.0
6.0-8.0 4.0-5.0 .10-.30 CE3MN 1.4469 J93404 958
6A Q 100 65 25 40.6 40 0.03 1.0 1.0 24.0-26.0
6.5-8.5 3.0-4.0 0.5-1.0 0.5-1.0 .20-.30 CD3MWCuN J93380 962
ASTM A995 - Castings, Austenitic-Ferritic (Duplex) Stainless Steel, for Pressure-Containing Parts
Grade Heat Treat-ment (a)
Mechanical Property Req. (b) PREN Alloy DesignationChemical Composition % - Range or Maximum
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 29
ASTM A1001 - High Strength Castings in Heavy Sections This specification covers cast alloy steels in:
o Normalized and tempered or quenched condition. o Section sizes through 37 inches (940 mm).
This specification is primarily used for very large hook castings. o This specification is suitable for high strain gradient conditions such as those encountered in hooks, shackles, support frames, and
other lifting devices. Section range and class selection will depend on design and service conditions. Users should note that this specification contemplates mechanical property gradients.
o Specification also includes Nitrogen and Oxygen limits.
inf = information only
Zr Cu Ti W V B
I
II .20-.28 1.0-1.4 0.02 0.015 .30-.60 1.0-1.3 .80-1.2 .60-.85 0.03 (inf) (inf) (inf) (inf) (inf) (inf)
II .20-.28 1.0-1.4 0.03 0.025 .30-.60 1.0-1.3 .80-1.2 .60-.85 0.07 (inf) (inf) (inf) (inf) (inf) (inf)
Use of other chemisty is permitted procided mechanical properties and chemical tolerances are met.
ASTM A1001 - Chemical Grade Composition (maximum % unless range is shown)
Grade C Mn P S Si Ni Cr Mo Al Residual elements reported for information only. Total: 60%
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 30
(TB) = Test block requirements are special (large!) for this specification – read specification carefully. 4d = Gauge length of the tensile test specimen equal to four times its diameter.
ASTM A1001 - High Strength Steel Castings in Heavy Sections
T/8 3T/8 T/8 3T/8 T/8 3T/8 T/8 3T/8 T/8 3T/8 Nitrogen (ppm)
Oxygen (ppm)
Report Hydrogen (ppm) info.
1 A I, II 110 100 90 80 18 15 36 30 25 15 110 100
1 B I 105 95 85 76 15 11 30 22 25 15 110 100
1 C I 90 80 70 63 17 13 34 26 25 15 110 100
2 A I 110 100 90 80 18 15 36 30 25 15 110 100
2 B I 105 95 85 76 16 12 32 24 25 15 110 100
2 C I 90 80 70 63 18 14 36 28 25 15 110 100
3 A I, II 110 100 90 80 18 15 36 30 25 15 100 90
3 B I 105 95 85 76 17 13 34 26 25 15 100 90
3 C I 90 80 70 63 19 16 38 32 25 15 100 90
4 A I, II 110 100 90 80 18 15 36 30 25 15 100 90 x
4 B I 105 95 85 76 19 16 38 32 25 15 100 90 x
4 C I 90 80 70 63 21 18 42 36 25 15 100 90 x
5 A I, II 110 100 90 80 18 15 36 30 25 15 90 80 x
5 B I 105 95 85 76 19 16 38 32 25 15 90 80 x
5 C I 90 80 70 63 21 18 42 36 25 15 90 80 x
6 A I 110 100 90 80 18 15 36 30 25 15 80 70 x
6 B I 105 95 85 76 19 16 38 32 25 15 80 70 x
6 C I 90 80 70 63 21 18 42 36 25 15 80 70 x
7 A I 110 100 90 80 18 15 36 30 25 15 70 60 x
7 B I 105 95 85 76 19 16 38 32 25 15 70 60 x
7 C I 90 80 70 63 21 18 42 36 25 15 70 60 x
Section Range Class Chemisty
Grade
Required Mechanical Properties (b) (TB) Gas ContentTensile (ksi) Yield (ksi) Elong 2 in. or 4d (%) Red. Of Area (%) Charpy V, (ft-lb) Maximum
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 31
Offshore, Military, NAVSEA, and Other Alloys, not listed under ASTM Specifications Tacoma, Chehalis and London produce other alloys that are not listed under ASTM specifications which include:
o Low and medium plain carbon steels. o High hardness and high strength low alloy steels. o Specialty stainless steels. o Nickel base alloys.
Depending on the properties desired for the stainless steels, these may include: o Low ferrite and low magnetic permeability. o Non-magnetic materials. o Low carbon for improved weldability. o Increased yield strength. o Good resistance to carburization and corrosion. o High temperature applications.
Our metallurgical staff is constantly working with new alloys to meet the demands of industry. Although you may not find a particular grade in this selector, we urge you to contact a representative who can help with the grade desired.
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 32
Cu C Mn Si Mo Cr Ni Cb+Ta Fe W Co
Inconel 600 • MIL-N-24271, resistant to corrosion and heat. — .12 1.0 1.5 — 14-17 balance 2.0 6-10 — .10 520
Hastelloy G • Excellent resistance to hot sulfuric and phosphoric acids 1.5-2.5 .05 1.0-2.0 1.0 5.5-7.5 21-23.5 balance 1.75-2.5 18-21 1.0 2.5 521
Hastelloy X • High temperature service. .10 1.0 1.0 8-10 20.5-23 balance — 17-20 .2-1.0 .5-2.5 549
Invar 36 • Low thermal expansion material .05 .60 .40 — .25 35-37 — balance — .50 508
Invar 42 • Low thermal expansion material .05 .80 .30 — .10 41-43 — balance — .50 509
Other NICKEL BASE ALLOYS also produced by Tacoma. MATERIAL TYPE • Tacoma alloy may be slightly varied from the
wrought material listed below
Chemical Composition % – Range or Maximum Tacoma Alloy
(d)
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 33
Metallurgical Tests Bradken-Tacoma, Chehalis and London (Ontario) perform various metallurgical tests for checking attributes of cast materials.
• Optical Emission Spectrometer for Iron (gray and ductile), Ni resist, High Chromium Iron, low carbon steel, alloy steel, Stainless steel, and nickel based analysis
• LECO combustion analysis of Carbon and Sulfur • LECO combustion analysis of Nitrogen, and Oxygen • Tension Test
o ASTM E8 / E8M Standard Test Methods for Tension Testing of Metallic Materials • Charpy Impact Testing per
o ASTM E23 Standard Test Methods for Notched Bar Impact Testing of Metallic Materials • Corrosion Tests;
o ASTM A923, A262, G48 • Ferrite Content;
o ASTM A800, A799, ferrite scope, and E562 (Point count) • Hardness Tests
o E110 (portable hardness testing), E10 (Brinell) • Magnetic Permeability
o Severn gauge • Nil-Ductility Transition Temperature (NDTT)
o ASTM E208 Standard Test Method for Conducting Drop-Weight Test to Determine Nil-Ductility Transition Temperature of Ferritic Steels
• Metallographic Examinations o ASTM E407 Standard Practice for Micro etching Metals and Alloys
• Bend Tests per o ASTM A703, A262 practice E, and for weld test qualifications
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 34
NON-DESTRUCTIVE EXAMINATIONS (NDE) Bradken Energy Products has developed a well-equipped on-site NDE Department staffed with fully qualified NDE specialists to perform virtually any examination or test required of a casting. Although the customer determines the type of NDE performed on castings, BEP engineering and technical personnel are available to help in making a decision on the type of NDE suitable for the casting in question. Tacoma is ASNT Qualified and maintains a ASNT Level III on staff. The following brief descriptions of NDE conducted by BEP Tacoma, Chehalis, or London provide general information on techniques used at BEP foundries. More detailed information is available by contacting a BEP Sales Representative.
NDE TYPES Magnetic Particle Examination
Magnetic particle examination is performed on ferromagnetic materials with calibrated equipment according to ASME Section III, V and VIII, ASTM E-709 and MIL STD 271, using both the “dry” and “wet” methods.
Liquid Penetrant Examination
Certified liquid penetrant materials are applied to nonmagnetic castings, which have been surface conditioned to aid the examination. Carefully controlled water temperature and pressure, casting temperature and dwell time help ensure compliance with such specifications as ASME Section III, V and VIII, ASTM E-165, NAVSEA 250-1500-1, MIL STD 2132A(SH), MIL STD 271. Tacoma prefers the water soluble method.
Radiographic Examination
Radiography, using Iridium 192, Cobalt 60 and an 8 MeV Linear Accelerator, is carried out following ASTM specifications E94, E142, ASME Section III, V and VIII, NAVSEA 250-1500-1, MIL STD 2132A(SH) and MIL STD 271. Film is processed in automatic processing equipment, densities verified using calibrated densitometers and then viewed using high intensity viewers. ASTM E71, E186, E192, E272, E280 and E446 reference radiographs are available for film interpretation purposes.
Ultrasonic Examination
Examinations are performed to detailed procedures written in accordance with ASTM A609 and ASME Section III, V and MIL STD 271. Ultrasonic equipment is calibrated in strict accordance with ASTM E317 and MIL STD 271.
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 35
NDE SPECIFICATIONS The table below summarizes the most commonly used specifications for non-destructive examination.
o This is, however, only a small fraction of the total number of specifications that have been developed for the nondestructive examination of various types of metal products.
It is incumbent on the foundry to have adequate knowledge of these many specifications, as well as to have the necessary equipment and properly trained personnel to perform the tests.
It is equally incumbent on the manufacturer to properly communicate his requirements and to neither over-specify nor under-specify such requirements as they may apply to a particular part.
Quality Level Technique Quality Level Technique Quality Level Technique Quality Level Technique American Society for
Testing Materials (ASTM)
Individual Specs
A488 E446 (to 2") E186 (2-4j") E280 (4j"+)
E94, E1025 and E1030
E125 A903
E709 E125 A903
E165 A609 A609
American Society for Non dest. Test
(ASNT)
American Society of Mech. Engineers
Sec. III Sec. VIII
Sec. IX SNT-TCIA Sec. III Sec. VIII
Sec. V Art. 2 & 3
Sec. III Sec. VIII
Sec. V Art. 7
Sec. III Sec. VIII
Sec. V Art. 6
Sec. III Sec. VIII
Sec. V Art. 23
American Welding Society (AWS)
Sec. V Art. 1 D2.0-56 271 2132 271 2132
Department of Defense (MIL-STD)
(DOD) 278 248 279
272 453 2132
271 2132
271 2132 271
U.S. Navy (Navships)
250-1500-1 0900-003-8000 410, 271 2132C
250-1500-1 0900-003-9001
250-1500-10900-006-
9010 250-1500-1
250-1500-1 0900-003-8000 250-1500-1
250-1500-1 0900-006-3010
Manufacturer’s Stand-ardization
Soc. (MSS) SP55 250-1500-1 SP54 SP53 SP93 SP94
American National Standard
ANSI B16.34
ASTM A488 Annex B ASTM
E1030 Annex C ASTM E709 Annex D ASTM E165 Annex E ASTM A609
WeldingGeneral Publishing Agency Surface Finish
Personel Qualification
Radiography Examination Mag Particle Examination Liq Penetrant Examination ULTRASONIC INSPECT.
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 36
Trademarks A list of trademarks is shown below which represent alloys listed in this material selector.
Hardness Conversions
Austenitic Stainless Steel Hardness Conversions NACE Standard MR0175 requires the hardness for this material not to exceed 22HRC. Typically, these materials are less than 20HRC.
o ASTM tables do not list values, because below 20HRC the test is not accurate. o Using table 2C and 2D of ASTM A370, an approximate hardness conversion for austenitic steels is shown.
Table 1. Hardness conversion for cast Austenitic Stainless Steel
Trademarks Product of Trademarks Product of AL-6XN Allegheny Ludlum Corporation Worthite Worthington Corp.
Chlorimet The Duriron Co. Zeron Mather Platt Ltd. FERRALIIUM® Langley Alloys Ltd. 15-5PH Armco Inc.
Hastelloy Haynes 17-4PH Armco Inc. Inconel and Incoloy Inco family of Co. 254SMO Avesta AB
Monel Inco family of Co. 253MA Avesta AB Nitronic Armco Inc. Virgo 38 Creusot – Loire RA85H Rolled Alloys Uranus 50M Creusot – Loire
�Rockwell C Hardness No.
Rockwell A Hardness No.
Brinell Hardness No. 10mm ball, 3000kg load
22 61.3 25321 60.8 24720 60.3 240
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 37
Duplex Stainless Steel Hardness Conversions Standard ASTM hardness conversion tables are only approximations. ASTM tables do not represent data from cast duplex stainless steel. The table was developed from actual hardness tests on cast duplex stainless steel.
Table 2. Hardness conversion for cast Duplex Stainless Steel
Rockwell C Hardness No.
Rockwell A Hardness No.
Brinell Hardness No. 10mm ball, 3000kg
load 19 60.0 231 20 60.6 235 21 61.3 239 22 61.9 243 23 62.6 248 24 63.2 252 25 63.9 256 26 64.5 260 27 65.2 264 28 65.8 269 29 66.5 273 30 67.1 277 31 67.8 281 32 68.4 285
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 38
CA6NM - Martensitic Stainless Steel The standard ASTM A370 hardness conversion tables state that the tables give approximate interrelationships of hardness values.
Data was developed in Tacoma on CA6NM material, which shows that the ASTM conversion tables do not apply and the more accurate relationship is shown in the table below.
For example, if a Rockwell C hardness maximum of 23 were necessary for a CA6NM part, this would convert to a Brinell of 255 HBW in lieu of the ASTM conversion of 243 HBW for a typical steel alloy.
Table 3. Hardness conversion for cast Martensitic Stainless Steel (CA6NM) Note: HRC 23 equivalent to 255 HBW
Rockwell C Hardness No.
Brinell Hardness No. 10mm ball, 3000kg Load Rockwell C
Hardness No.
Brinell Hardness No. 10mm ball, 3000kg Load
STEEL CA6NM STEEL CA6NM (11) 190 201
24 247 262
(12) 194 207
25 253 269 (13) 199 217
26 258 277
(16) 212 223
27 264 281 (17) 215 228
28 271 286
(18) 219 235
29 279 302 (19) 224 241
30 286 306
21 231 248
31 294 311 22 237 252
32 301 321
23 243 255
33 311 332
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 39
Tacoma Alloy ASTM AISI501 A494 CZ100 NICKEL 210508 (gas sensitive – best AOD) INVAR 36509 (gas sensitive – best AOD) INVAR 42510 A494 M-35-1, MONEL 411, A494 M-35-2[1] MONEL512 MIL-Spec QQ-N-288 COMP. E , A494 M30C MONEL w/Cb520 MIL-S-24271A (SOLUTION ANNEAL FOR DUCTILITY)521 HASTELLOY G522 A494 CW-6MC, EB3163, INCONEL 625523 A494 CY-40 (MUST BE SOLUTION ANNEALED)541 A494 N-12MV, Only quote if T<3 inches HASTELLOY B544 A494 CW-6M, CHLORIMET 3545 A494 N-7M, (no quote if over 4inches) CHLORIMET 2, 545A Like N7M,but much tighter specification FMC 19C7546 A494 CW-2M, HASTELLOY C4C549 A567 GRADE 5, HASTELLOY X
Cross Reference Bradken Alloy VS Material DesignationNickel Based Alloys
Tacoma Alloy ASTM AISI710 1010 MODIFIED711 A216 S-16 for Hydroflouric Acid Alkylation Service (low residuals)715 A352 LCA, LCB, LCC, A757 A1Q, A2Q 1015 MODIFIED716 A216-83 Grade WCB with CVN & Low CE-only Normalize+Temper717 A216 WCC with CVN Requirements720 A216 WCA, A27 65-35,60-30,U60-30,N-2, N-1, 70-40; 1020 ASTM 721 A487 Grade 2, Class A & B723 A216 WCC, A356 Grade 1 with approved Deoxidation724 A216 WCB with 0.25% Carbon Max.725 A216 WCB, WCC, WCA; A27 70-36 ; 1025 ASTM cast grades730 A915 grade SC1030 and A958 grade SC1030 1030 ASTM cast grades 740 A915 grade SC1040 and A958 grade SC1040 1040 ASTM cast grades745 A915 SC1045 ; A958 SC1045 1045 MODIFIED746 1046 Modified799 Special Chemistries Requested Per this Designation
Carbon SteelsCross Reference Bradken Alloy VS Material Designation
Tacoma Alloy ASTM AISI800 I-36801 A352 LC1802 A217 WC1, A356 Grade 2 A356 Grade 2 W/ Approved Deoxidation 4017 Modified804 Proprietary Alloy for weldable low alloy steel; 50ksi Yield min. CE<0.48 806 Proprietary Alloy for weldable low alloy for 70ksi min Yield CE <0.553810 A148 80-40, 80-50, 90-60, A486 GR. 90, 4125 Modified815 4130 modififed820 A148 105-85, 115-95, 135-125 Light to Medium Sections 4130 Modified821 A915 grade SC4130 and A958 grade SC4130 4130 ASTM grades822 HIGHER ALLOYED 820. A148 UP TO 135-125823 HIGHER ALLOYED 820. A148 UP TO 150-135824 8825 Modified825 Higher Alloyed USED For High Hardness Applications826 A356 GRADE 5827 A915 grade SC4140 and A958 grade SC4140 4140 ASTM cast grades828 A148 90-60 FOR ROBINS829 A915 grade SC8630 and A958 grade SC8630 8630 ASTM cast grades830 Higher Alloyed 820831 A487 Grade 4 Classes A - E: A915 grade SC8625, A958 grade SC8625 8625 ASTM cast grades833 A487 Grade 10 Class A, B, 4320 Modified834 4320 Modified835 8635 Modified836 A487 Grade 10 Modified837 A487 Grade 9 Classes A - D, 4125 Modified839 A915 grade SC8620 and A958 grade SC8625 8620 ASTM cast grades 840 A757 Grade C1Q, 4620 Modified841 Similar TO A487 Grade 10 with .18%C -105ksi Tensile and 85ksi Yield843 A487 grade 4B 4320 Modified844 CR 1.5 - NI 2 - MO .5 - Low Alloy Steel 850 ASTM A356 Grade 9851 ASTM A356 Grade 6853 A217 WC6, A356 Grade 6854 A217 WC9, A356 Grade 10, A487 Grade 8 Modified, A757 Grade D1855 A217 C5856 ASTM A217 WC11, A356 Grade 6, various Grades in A757857 ASTM A356 Grade 10859 ASTM A356 grade 12 and A217 Grade C12A860 A352 LC2: A757 B2N, B2Q861 A352 LC3: A757 B3N, B3Q862 A352 LC4: A757 B4N, B4Q863 A757 E1Q MODIFIED864 T9074-BD-GIB-010/0300 Appendix D. HY80; MIL-S-23008 Grade HY-80 864 A352 LC2-1. A757 Grades E2N1, E2Q1, E2Q2, E2N2, E2N3, E2Q3 Mod865 T9074-BD-GIB-010/0300 Appendix D HY100865 MIL-S-23008 GRADE HY-100869 A217 C12898 A148 105-85899 Request special chemistries
Cross Reference Bradken Alloy VS Material DesignationAlloy Steel
BEP - Bradken Energy Products Alloy Guide 2013 Tacoma, Washington; Chehalis, Washington; London, Ontario
Page 40
Stainless Cross-reference
Tacoma Alloy ASTM AISI900 A743 & A217 CA15: A487 CA15 Class A, B 410901 A743 CA40 420902 A743 & A487 CA15M, MIL-C-24707-6903 A757 E3N, A743 & A356 CA6NM with Deoxidation. A487 CA6NM Class A909 A487 CA6NM Class B (Low C CA6NM for HRC 23 Max.) NACE910 A351 & A743 & A744 CF8 304911 A351 & A743 CF3 & CF3A (any low carbon) 304L912 Ferrite <1.5% & low Magnetic Permeability 305913 A351 CF8A914 A351 CG3M (per specification). See 923 for higher strength.915 A297 HF, 302B916 A351 & A743 & A744 CF8C 347917 A351 & A743 CGMMN Nitronic 50920 A351 & A743 & A744 CF8M, 316921 A351 & A743 & A744 CF3M CF3MA, (any low carbon) 316L922 Nonmagnetic 316 316923 A351 & A743 & A744 CG8M (Higher strength) 317924 CG8M with 0.03% C Max. , also CG3M (see Tacoma Alloy 914) 925 A351 & A743 & A744 CF8M with 50ksi minimum YIELD, 316928 A351 CF10M929 CF3MN 316LN930 A351 & A743 CH-10, CH-20, 309931 Rolled Alloys RA85H932 A743 CE-30933 Cast Version of UNS S308115, Avesta 253MA; Alloy 933 w/Cerium.934 ASTM A297 Grade HN935 A297 HH, A447 Type I, II 309
Cross Reference Bradken Alloy VS Material DesignationStainless Steel
Tacoma Alloy ASTM AISI936 Proprietary Alloy for die blocks.940 A351 & A743 CK20 310941 A351 HK30942 A351 HK40943 330945 A297 HK As Cast946 A297 HT As Cast 330947 A743 CN3M, IN862948 A351 & A743 & A744 CN7M, ALLOY 20949 A351 & A743 & A744 CN3MN Allegeny AL6XN 950 Uddelholm 904L951 A351, A743, A744, A990 CK-3MCuN; Avesta254 SMO952 A747 CB7CU-2, 15-5 PH954 A747 CB7CU-1 H900, 17-4 PH955 A747 CB7CU-1 H925 TO H1150 DBL: 17-4 PH957 A890, A995 CD4MCuN - GRADE 1B: Duplex Stainless958 A890, A995 Grade 5A (CE3MN) Duplex Stainless959 A890, A995 CD3MN Grade 4A; Sandvick 2205, DIN X2CRNIMO 22.5 Duplex Stainless961 Duplex - Similar to Zeron 25 Duplex Stainless962 A890, A995 CD3MWCuN grade 6A (has 0.5 to 1.0% W) Zeron 100, 963 A890, A995 CD6MN 3A and UNS J93371 Duples Stainless964 Duplex - Similar to Zeron – Uranus 50M Duples Stainless966 CLASS 2001 REV C Duples Stainless967 A890 grade 1C, CD3MCuN Duples Stainless970
Cross Reference Bradken Alloy VS Material DesignationStainless Steel Continued
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone
(253)-475-4600 *Fax (253-473-8710
715 Carbon S
teelA
lloy Data S
heet
Water quenched and tem
pered alloyG
rades WC
B-W
CC
(with S
upplement S
15), LCB
-LCC
Bradken T
acoma A
lloy 715 is a plain carbon steel with excellent C
harpy v-notch impact
properties that can satisfy the requirements of A
ST
M A
216 Grades W
CB
, WC
C, and
A352 G
rades LCB
, LCC
when specified.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you.
We urge you to contact one of the B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Valves, flanges, fittings, pum
p cases and other pressure containing parts, and structural applications. W
hen a plain carbon steel requiring improved im
pact properties over the norm
al cast carbon steel grades is selected, choose WC
B or W
CC
in the quenched and tem
pered condition.
Typical Com
position and Mechanical P
roperties
The alloy is designed w
ith a maxim
um carbon content of 0.25%
, enhancing weldability.
Excellent low
temperature toughness properties are achieved w
ith a normalize and
temper heat treatm
ent.
Typical Com
position
C M
n Si
P S
0.20 0.90
0.45 0.014
0.006
Typical Mechanical P
roperties
Tensile Strength Yield Strength
% Elongation
%RA
Charpy (at -50°F)
75 ksi 47 ksi
31 65
37 ft-lb
Page 41
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
Charpy V
-notch Curve for quenched and tem
pered carbon steel
The C
harpy V-notch transition curves for B
radken Tacom
a Alloy 715 show
the effect of A
OD
(Argon O
xygen Decarburization) refinem
ent versus conventionally Electric A
rc F
urnace (Arc)
refined metal. W
hen carbon steel is processed using the AO
D m
ethod of refining, the im
pact properties are enhanced as shown above.
The A
OD
process offers an opportunity to improve steel w
ith basic refining. The product
of this refinement is steel w
ith low residual gas levels resulting in few
er non-metallic
inclusions. This cleaner steel coupled w
ith low sulfur levels (typically less than 0.010%
) dram
atically improves toughness properties.
Although carbon steel can be produced by conventional m
ethods, AO
D processing further
improves the integrity of the casting. A
OD
refined carbon steel has excellent weldability
due to the low carbon and low
sulfur contents. Hot tearing during solidification on even
the most intricate shape is dim
inished considerably, reducing the need to weld repair and
enhancing the quality of the casting.
Bradken T
acoma A
lloy 715 should be considered when a plain carbon steel w
ith excellent im
pact strength is required. Upon request, certifications are available verifying specific
low tem
perature impact properties. T
he customer should specify the desired test
temperature and the m
inimum
absorbed energy that must be achieved.
Bradken T
acoma testing facilities include a certified C
harpy V-notch im
pact machine and
a nil-ductility transition temperature (N
DT
T) testing apparatus to m
eet requirements for
toughness properties.
Page 42
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
3201 South W
ilkeson St *T
acoma, W
ashington98409 *P
hone (253)-475-4600 *Fax (253-473-8710
804 Low alloy S
teelA
lloy Data S
heet
Bradken Tacom
a Alloy 804
Alloy steel designed for 50 ksi (345 M
Pa) yield strength, 0.47 C
E, w
ith excellent toughness
This alloy w
as developed by Bradken T
acoma to m
eet the requirements of the O
ffshore Oil
Industry. It is weldable w
ith or without the need for preheat or post w
eld heat treatment. It
provides good mechanical properties w
ith excellent yield strength and ductility. Bradken T
acoma
alloy 804 is refined using the AO
D (A
rgon, Oxygen, D
ecarburization) process resulting in low
sulfur and gas levels producing very clean steel with excellent ductility.
Bradken T
acoma F
oundry has a technical staff of engineers that arew
illing to assist you. We
urge you to contact one of the Bradken T
acoma representatives so that w
e may be able to service
your needs and provide you with a high quality product
Typical Applications
Structural castings for sem
i submersibles, riser baskets, seism
ic safety devices, TLP
s, FP
SO
, and S
pars
Typical Mechanical P
roperties1
13 inch (330mm
) QT
ST
ypical at surface
Typical at T
/3
Tensile S
trength ksi (MP
a)79.8 (550)
74.8 (516)Y
ield Strength ksi (M
Pa)
59.3 (409)52.8 (364)
% E
longation29
32%
Reduction of A
rea74
75Y
ield strength/Tensile strength ratio
0.7440.706
Charpy V
-notch at -40°C ft-lb (Joules)
113 (153)211 (287)
Charpy V
-notch at -40°C %
Shear
100100
1 1180°F temper and 1150°F PW
HT
Page 43
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
3201 South W
ilkeson St *T
acoma, W
ashington98409 *P
hone (253)-475-4600 *Fax (253-473-8710
Typical AO
D R
efined Chem
istry2
CM
nS
iM
oC
rN
iA
lP
S
0.1150.912
0.5010.290
0.2640.923
0.0160.007
0.002
VC
uN
TiC
b3
BC
EP
CM
0.00040.112
0.0057<0.001
0.002<0.001
0.4470.230
Charpy V
-notch
CTO
D of B
ase Metal
CE
= 0.4763.6 ksi Y
ield Strength
3x3x15 inches -10°C (+14°F
) m
= 0.030 inches m
= 0.76 mm
Valid
m= 0.031 inches
m= 0.80 m
mV
alidm
= 0.028 inchesm
= 0.72 mm
Valid
2 The chemistry, CE, and PCM
can be varied to achieve customized requirem
ents. 3 Cb is Colum
bium w
hich is another term for N
b, Niobium
.
Page 44
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
3201 South W
ilkeson St *T
acoma, W
ashington98409 *P
hone (253)-475-4600 *Fax (253-473-8710
Heat Treatm
entT
his is a homogenized, w
ater quenched, and tempered alloy resulting in a tem
pered martensite
structure shown in the m
icrographs below.
Microstructure
100x500x
Page 45
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
Page 46
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
806 Low alloy S
teelA
lloy Data S
heet
Bradken Tacom
a Alloy 806
Alloy S
teel designed for65
ksi(450 MP
a)yield strengthand excellent toughness.
CE
0.553 Max
Bradken T
acoma A
lloy 806 was developed to exhibit strength and toughness. It is used w
ith or w
ithout PW
HT
. 806 is refined using the AO
D (A
rgon, Oxygen, D
ecarburization) process resulting in low
sulfur and gas levels producing a very clean steel with excellent ductility and strength.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
e urge you to contact one of the B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product
Typical Applications
Structural and pressure retaining castings for sem
i submersibles; pontoons, nodes, riser baskets,
TLP
s and Spars.
Charpy V
-notch
0 20 40 60 80100120140160180
-70-60
-50-40
-30-20
-100
1020
3040
Absorbed Energy
Temperature (F or C
)
806 CV
N curve C
E .52, Yield 75 ksi (517 M
pa)
ft-lbsjoules
Page 47
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
Actual M
echanical Properties in Q
uality Test Coupons (Q
TC)
at T/4 of 7 inch (178m
m) Q
TSat T/4 of 11.7
inch (297 mm
) Q
TCTensile S
trength ksi (MP
a)92.1 (635)
91.3 (629)Y
ield Strength ksi (M
Pa)
72.2 (498)71.6 (494)
% E
longation 25
25%
Reduction of A
rea69
69Y
ield strength/Tensile strength ratio0.784
0.784C
harpy V-notch at +23°F (-5C
) ft-lb (Joules)
126.7 (172)120 (163)
% S
hear96
95
Typical AO
D R
efined Chem
istry
CM
nS
iM
oC
rN
iA
lP
S
0.121.35
0.580.24
0.240.94
0.0160.007
0.001
VC
uN
TiC
b1
BC
EP
CM
0.00010.12
0.00570.0008
0.0023<0.001
0.520.26
ND
TT
Test tw
o (2) specimens from
surface to exhibit “No B
reak” at -4°Fand
-13°F.
Heat Treatm
ent
This S
teel is homogenized, w
ater quenched,and tempered alloy.T
he resulting tempered
martensite is both strong and tough.
1 Cb is Columbium
which is another term
for Nb, N
iobium.
Figure 1100X
Figure 2500X
Page 48
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
864 High A
lloy Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 864
Alloy S
teel designed for 80ksi (550MP
a) yield strength with excellent toughness
This alloy w
as developed to exhibit high strength and toughness. This alloy is know
n as HY
80 and has been used in m
ilitary and naval applications for several decades. The alloy can be
produced with or w
ithout post weld heat treatm
ent.Bradken T
acoma alloy
864 is refined using the A
OD
(Argon, O
xygen, Decarburization) process resulting in low
sulfur and gas levels producing clean steel w
ith excellent ductility, toughness, and strength. This alloy can be used anyw
here strength com
bined with low
temperature toughness is required.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
e urge you to contact one of the B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Structural castings for N
aval vessels(T
ech Pub T
9074-BD
-GIB
=010/0300 Appendix D
formerly
MIL-S
-23008D) and
offshore platforms.
Chem
istry Maxim
ums and R
anges
CM
nS
iM
oC
rN
iP
S
0.200.55-0.75
0.500.30-0.60
1.35-1.65
2.75-3.25
0.0140.008
VC
u
0.0300.25
Mechanical P
roperties
Tensile
Strength Yield
Strength %
Elongation
%RA
Specification M
inimum
Inform
ation 80 ksi
20 35
Typical in sections from
3-10” at T/4
115 ksi (794M
PA) 95 ksi
(653MPA)
20.5 58.5
Page 49
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
Charpy
V-notch
Heat Treatm
ent
This is a w
ater quenched and tempered alloy. M
ilitary specifications prohibit PW
HT
. Offshore
applications usually require PW
HT
.
0 20 40 60 80
100
120
140
160
180
-110-100
-90-80
-70-60
-50-40
-30-20
-100
1020
Absorbed energy
Temperature (F or C
)
864 Chapry V-N
otch Curve
Joules
ft-lb
Page 50
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
903 CA
6NM
Martensitic S
tainless A
lloy Data S
heet
Bradken Tacom
a Alloy 903
Grade C
A6N
M &
E3N
Bradken T
acoma A
lloy 903 is a martensitic stainless steel that satisfies the requirem
ents of Grade
CA
6NM
for AS
TM
A352, A
356, A743, A
487 for CA
6NM
Class A
, and A757 G
rade E3N
. This
alloy has gained popularity among designers in
the pump, gas
and steam turbine industries. T
he alloy has desirable properties thatinclude
weldability, corrosion and cavitation resistance,
toughness and resistance to cracking. CA
6NM
replaced CA
15 in the 1960s. CA
15 is merely a
12% chrom
ium alloy sim
ilar to the first stainless steels invented. CA
6NM
contains nickel, which
gives it superior weldable and itis
stronger and tougher than CA
15.
CA
6NM
is refined using the Argon O
xygen Decarburization (A
OD
) process. AO
D enhancem
ent can consistently produce a m
aterial with low
er carbon, lower sulfur, and low
er gas contents, resulting in a cleaner steel w
ith fewer non-m
etallic inclusions. The low
er carbon and sulfur levels im
prove weldability, decrease the susceptibility to hot tears and cracking, and significantly
improve the C
harpy V-notch im
pact properties.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
e urge you to contact one of the B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Pum
ps, impellers, bow
ls, diffusers, runners for water turbines, valves and com
pressor cases,are areas w
here strength, weldability, and toughness are desirable. A
lso in Gas and steam
turbine blade rings and cases w
here good strength at temperature is required.
Typical Chem
istry
CM
nS
iM
oC
rN
iA
lP
S
0.030.53
0.480.57
12.73.812
0.0280.023
0.003
VC
uN
Cb
1
0.030.20
0.01220.011
Com
puter monitored instructions are m
aintained during the melting operation. T
hisensures
precise control to achieve the analysis. A consistent chem
ical content guarantees that the desired m
echanical properties are satisfied.
1 Cb is Columbium
, which is another term
for Nb, N
iobium.
Page 51
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
Mechanical P
roperties
Tensile
Strength Yield
Strength %
Elongation
%RA
H
ardness, H
B Charpy V
-notch
Specified m
inimum
117 ksi
87 ksi 20
35 285 m
ax 20 ft-lb @
-100F*
Typical 121 ksi
94 ksi 20
65 275
49 ft-lb @
-100F *A
757 E3N
Page 52
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
3201 South W
ilkesonS
t *Tacom
a, Washington 98409 *P
hone (253)-475-4600 *Fax (253-473-8710
909 CA
6NM
Class B
Alloy D
ata Sheet
Bradken Tacom
a Alloy 909
0.03% M
ax Carbon C
A6N
MA
STM
A487 and A
SM
E S
A487 G
rade CA
6NM
Class B
Bradken T
acoma A
lloy 909 is a product of the Argon O
xygen Decarburization (A
OD
) process and B
radken Tacom
a technology. This highly refined m
etal has a low gas
content and a low sulfur level. T
he result is a cleaner, higher quality casting with
excellent weldability and low
temperature toughness.
Bradken T
acoma A
lloy 909 is a low carbon version of the w
ell-known m
artensitic stainless steel G
rade CA
6NM
. It was developed for use in hydrogen sulfide environm
ents and offers advantages over the cast stainless steel G
rade CA
15 that it has replaced in most applications.
The N
ational Association of C
orrosion Engineers (N
AC
E) has accepted C
A6N
M as a m
aterial that can be em
ployed in oil field equipment. N
AC
E S
tandard MR
-0175 specifies that AS
TM
A487
Grade C
A6N
M C
lass B is appropriate w
hen the hardness does not exceed HR
C 23. T
his alloy can achieve the H
RC
23 maxim
um if the m
aximum
carbon content is 0.03%. T
he HR
C 23
maxim
um hardness is required for H
2 S environm
ents.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
e urge you to contact one of the B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product
Typical Applications
Pum
ps, valves, and cases for the Oil Industry w
ith low hardness (per N
AC
E M
R0175), excellent
weldability, and low
temperature toughness
Typical Chem
istry Properties
CM
nS
iM
oC
rN
iA
lP
S0.016
0.530.48
0.5312.70
3.810.016
0.0230.003
VC
u0.031
0.19
Mechanical P
roperties AS
TM A
487 CA
6NM
Class B
Tensile
Strength Yield
Strength %
Elongation
%RA
H
ardness, M
ax. HRC
(HB)
Required m
inimum
100 ksi
75 ksi 17
35 23 (255)
Typical 113
87 21
68 19(232)
Page 53
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
AP
I Standard 610, sixth edition, defines the m
inimum
requirements for centrifugal pum
ps for use in petroleum
refinery service. It states, “Materials for the pressure casing, shafting, balance
pistons, impellers and bolting having hardness
in excess of Rockw
ell C23
shall not be used for com
ponents exposed to wet H
2 S service, including trace quantities.”
Bradken T
acoma alloy 909 castings w
ill not exceed a hardness of Rockw
ell C23. T
he class B
CA
6NM
in AS
TM
has a carbon max of 0.06%
. By specifying a C
arbon of 0.03% m
aximum
in the order, the base m
etal can easily meet 23H
RC
. Low levels of carbon are achieved w
ith AO
D
melting or judicial use of scrap and induction m
elting. It will be very difficult to m
eet the 23HR
C
maxim
um w
ith carbon levels over 0.03%.
Typical Charpy V
-Notch V
alues
Temperature, °F
Ft.-lb-50
85-10
11710
105
Heat Treatm
entT
he following heat treatm
ent produces CA
6NM
castings that satisfyN
AC
E S
tandard MR
-0175 for C
A6N
M castings and A
ST
M A
487 grade CA
6NM
class B.
Norm
alize + 1250F +1125F
The 1250F
cycle is an intercritical heat treatment. T
his means half the m
artensite gets a very w
arm tem
per (softens the metal) and the other half turns into austenite, w
hichtransform
s into untem
pered martensite upon cooling from
1250F.
It is imperative that the 1250F
be followed
directlyby 1125F
, which
is a tempering cycle. T
he 1125F
will tem
per the new m
artensite. The result is soft and softer m
artensite crystals in the structure.
Welding
The alloy is easy to w
eld. The P
WH
T is 1250 + 1125F
which
softensthe w
eld in the same
manner as the base m
etal.
Hardness C
onversions for CA
6NM
The standard conversion correlations in A
ST
M A
370 do not apply to CA
6NM
. The data below
show
the alloy specific hardness conversion for CA
6NM
.
HB
Class B
CA
6NM
; HR
C
approved by AP
I201
11207
12217
13223
16228
17235
18241
19248
21255
23
Page 54
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
Page 55
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
Page 56
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
Itis important to reduce the potential for intergranular carbides. Intergranular carbides are a low
m
elting phase segregates on grain boundaries and contributes to the cracking tendency of this alloy.A
0.03% m
aximum
carbon minim
izes the number of carbides
present, resulting in reduced w
elding problems. T
he lower carbon further enhances the alloy’s corrosion resistance, w
hich is typical of the com
mon “L” grades. N
ote that the specifications often have 0.07% C
arbon m
aximum
.
Please specify in the quote and purchase order that a carbon 0.03%
maxim
umis required.
Bradken T
acoma proprietary A
OD
processing methods ensures low
sulfur levels and a cleaner m
aterial.
In the past it was virtually im
possible to pass liquid penetrant examination w
ith non-AO
D C
N7M
because of the inherent cracks developed from
grain boundary carbides in the fully austenitic stainless steel. A
OD
refined Bradken T
acoma A
lloy 948 is now readily processed w
ithout grain boundary cracking, and can satisfy LP
E requirem
ents as outlined by AS
ME
and military
specifications.
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
Page 57
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
957 Duplex S
tainless steelA
lloy Data S
heet
Bradken Tacom
a Alloy 957
AS
TM A
890 & A
995 Grade 1B
, CD
4MC
uN
Bradken T
acoma A
lloy 957 satisfies the requirements of G
rade 1B (C
D4M
CuN
). The
choice of specification is dependent upon the application and the environment. A
ST
M
A890 is for general purpose and A
995 is for pressure vessel castings.
CD
4MC
uN is used in m
any severe environments including brine, seaw
ater, sulfuric acid, nitric acid and other oxidizing and reducing corrosive agents. A
lloy 957’s ability to resist corrosion is superior and its yield strength is approxim
ately double that of grades CF
8 and C
F8M
.
Duplex S
tainless steelspossesses a tw
o-phase microstructure of approxim
ately 50%
ferrite and 50% austenite. T
his structure gives the Duplex additional strength and
corrosion resistance especially in Chloride service. In com
parison, alloys like CF
8M
contain typically 5-20% ferrite and the balance austenite, and they do not perform
well in
chloride environments.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you.
We urge you to contact one of the B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product
Typical Applications
Areas w
here high corrosion resistance is necessaryas w
ell as added strength, especially in environm
ents containing chlorides
TypicalChem
istry and Mechanical P
roperties
CM
nS
iM
oC
rN
iA
lP
S
0.020.56
0.652.0
24.95.12
0.0380.026
0.004
VC
uN
TiC
b1
0.0432.89
0.164<0.001
0.013
1 Cb is Columbium
which is another term
for Nb, N
iobium.
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
Page 58
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
100 ksi 70 ksi
16
Typical 113 ksi
81 ksi 28
Nitrogen
Nitrogen is purposely included in B
radken Tacom
a Alloy 957 in a range of 0.15-0.25%
. T
his element alters the solidification kinetics to the extent that detrim
ental alloy segregation is reduced. In addition, the resistance to chloride ion induced pitting is im
proved. The addition of nitrogen is controlled using the A
OD
process.
Welding
The addition of nitrogen in A
lloy 957 enhances weldability. A
n influential element w
hich adversely affects w
eldability is sulfur. It is important to achieve a low
sulfur content to ensure good w
eldability. Bradken T
acoma m
aintains strict controlover carbon, sulfur and nitrogen. T
he resultant alloy is readily weldable.
AO
D
With the use of B
radken Tacom
a proprietary methods and the A
rgon Oxygen
Decarburization (A
OD
) refining process, the desired chemical content is easily achieved.
Typical sulfur and carbon levels are 0.004%
and 0.02% respectively.
Typical Microstructure of duplex stainless steel
The dark m
atrix is ferrite. The lighter pools are austenite.
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
Page 59
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
958 Super D
uplex Stainless S
teel A
lloy Data S
heet
AS
TM A
890 Grade 5A
, UN
S J93404
AS
uper Duplex S
tainless steel for seawater and chloride service
Bradken T
acoma A
lloy 958 is a Super D
uplex Stainless steel designed to m
aximize the
resistance to chloride corrosion. Com
parisons with other alloys reflect its superior
properties in chloride service.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you.
We urge you to contact one of the B
radken Tacom
a representatives sothat w
e may be
able to service your needs and provide you with a high quality product
Typical Applications
Pum
ps and valves in seawater and other aggressive environm
ents
Typical Chem
istry and Mechanical P
ropertiesT
he alloy is balanced to produce a Duplex S
tainless steel containing austenite dispersed throughout a ferrite m
atrix. The high chrom
ium and m
olybdenum content greatly enhance
the resistance to corrosion. Nitrogen im
proves pitting resistance and reduces chromium
segregation.
CM
nS
iM
oC
rN
iA
lP
S
0.0180.485
0.4284.245
24.567.707
0.0380.022
0.005
VC
uN
Cb
1
0.0550.228
0.17950.014
Tensile
Strength
Yield
Strength
%E
longationC
harpy V-notch
at -50FR
equired by S
pecification100 ksi
75 ksi18
See A
ST
M
A923 B
958 Typical
111 ksi79 ksi
30130 ft-lb
1 Cb is Columbium
which is another term
for Nb, N
iobium.
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
Page 60
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
A com
parison of the minim
um tensile properties show
s Bradken T
acoma A
lloy 958 to be sim
ilar to gradesCD
4MC
u and CA
6NM
and superior to the other alloys shown below
.
AS
TM
/Grade
Tensile S
trength (ksi)Y
ield Strength (ksi)
Elongation (%
)B
radken Tacom
a 958, 5A100
7518
CD
4MC
u100
7016
Ferralium
255110
7020
CA
6NM
11080
15C
F3
7030
35C
F3M
7030
30C
G8M
7535
25C
W-12M
M72
404
Heat Treatm
entO
ptimum
mechanical and corrosion resistant properties are achieved w
ith a solution heat treatm
ent at 2075°F follow
ed by a water quench.
Corrosion R
esistance
Pitting P
otential
The pitting corrosion resistance of various alloys w
as determined by conducting anodic
polarization tests in a 1M (5.8%
) NaC
l aqueous solution. At 122
°F, no pitting occurred on B
radken Tacom
a Alloy 958. T
his test is an indication of the likelihood of pit initiation in m
arine environments. A
s the temperature is increased, the test becom
es more severe.
Therefore, it is im
portant to observe both the temperature and potential m
easured when
comparing the various alloys.
As the pitting potential increases, so does the resistance to pitting corrosion w
hen similar
temperatures are com
pared. Alloy 2205 w
as the highest with a 340 m
v at 50°C
, however
Bradken T
acoma A
lloy958 resulted in 240 m
v at 65°C
while F
erralium 255 only achieved
110 mv at 60
°C.
Alloy
Tem
perature, °CP
itting Potential M
v.B
radken Tacom
a Alloy 958
[1]65
240
CF
8M[1]
65-25
Ferralium
255[2]
60110
SA
F 2205 [2]
50340
T316 [2]
5060
Bradken T
acoma A
lloy 958[1]
50N
o Pitting
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
Page 61
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
Crevice C
orrosion
Many stainless steels have excellent overall corrosion resistance; how
ever most have not
been extensively employed in seaw
ater because they are subject to localized corrosion in stagnant sea w
ater.T
his type of attack is a form of crevice corrosion that m
ay occur as a result of a lack of oxygen w
hich is necessary to form a protective passive film
. The
stagnant conditions arise when the flow
rate is typically less than about 3.9 to 5.2 ft per second, w
hen marine organism
s are attached to the surface or where crevices exist.
The crevice corrosion resistance w
as evaluated for various alloys by determining the
critical crevice temperature, the tem
perature above which an alloy becom
es susceptible to crevice corrosion. T
ests were perform
ed in a 10% ferric chloride solution at pH
1 for 24 hours.
Alloy
Critical C
revice Tem
p, °C%
Mo
2%
Cr
Avesta 254 S
MO
[3]43
6.120
Bradken T
acoma A
lloy 958 [1]37
4.725
904L [3]6
4.220
20Cb3 [3]
-32.4
20316L [3]
-32.8
16
Crevice C
orrosion in Seaw
ater
Actual tests w
ere performed in filtered seaw
ater to determine the resistance to crevice
corrosion. Triplicate specim
ens, 100x150mm
were in contact w
ith multiple crevice
washers (acetylresin) having 20 grooves and plateaus. A
washer w
as affixed to each side of potential crevice sites for each specim
en was 40.
Seaw
ater, flowing at approxim
ately 0.02 m/s, w
as controlled at a temperature if 25
°C ±
2°C
. Bradken T
acoma A
lloy 958 was subjected to a 60 day test. R
esults show the
percent of sites attacked based on a possible 120 sites. Depth of attack w
as measured
with a needle point dial gauge to the nearest 0.01m
m.
The follow
ing table shows B
radken Tacom
a Alloy 958 com
pared to various data obtained from
other sources[4][5]. T
he tests were perform
ed at a temperature of 30
°C, but the 5
°variation is not significant. A
higher torque level will produce a m
ore severe test as show
n when com
paring the two results for Inco IN
862. As w
ould be expected, a 60 day test is m
ore stringent than 30 days.
2 Both molybdenum
and chromium
enhance the resistance to crevice corrosion as indicated by their effect on the critical crevice tem
perature.
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
948 Stainless
Steel
Alloy D
ata Sheet
Bradken Tacom
a Alloy 948
0.03% M
ax Carbon C
N7M
(aka CN
3MC
u)
Bradken T
acoma A
lloy 948 is a low carbon version of the w
ell-known cast austenitic stainless
steel CN
7M. Its chem
ical composition and m
echanical properties satisfy the requirements of
grade CN
7M under A
ST
M A
351, A743, A
744, A990 and A
SM
E S
A351.
This corrosion resistant stainless steel alloy has an excellent reputation for its use in sulfuric acid
and in many reducing chem
icals. The high nickel content together w
ith the added elements
molybdenum
and copper impart the necessary resistance to corrosion in these environm
ents.
Unfortunately, C
N7M
has a reputation for poor weldability
and a high susceptibility for hot tears and solidification cracking. B
radken Tacom
a has virtually eliminated these problem
s as a result of A
rgon Oxygen D
ecarburization (AO
D) refining. T
he key element for this success is the efficient
removal of carbon and sulfur during refining. A
typical carbon content for Bradken T
acoma A
lloy 948 is <0.015%
while the sulfur is <0.005%
. Reducing the level of these tw
o elements has
dramatically reduced issues previously encountered w
ith this alloy. A superior casting results
when the carbon and sulfur contents are controlled to these low
concentrations.
Bradken T
acoma F
oundry has a technical staff of engineers that are willing to assist you. W
eurge you to contact one of these B
radken Tacom
a representatives so that we m
ay be able to service your needs and provide you w
ith a high quality product.
Typical Applications
Chem
ical processing, heat exchangers, pumps, valves, highly corrosive environm
ents
Typical Com
position
CM
nS
iM
oC
rN
iP
S
0.0120.41
0.662.4
20.428.7
0.0020.002
Cu
N
3.20.0785
Tensile Properties
Tensile
Strength Yield
Strength %
Elongation
Required by specification
62 ksi 25 ksi
35
Typical 71 ksi
32 ksi 50
3201 South W
ilkeson St •
Tacoma, W
ashington 98409 • P
hone (253) 475-4600 • Fax (253) 473-8710
Page 62
3201 South W
ilkeson St *T
acoma, W
ashington 98409 *Phone (253)-475-4600 *F
ax (253-473-8710
Alloy
Tem
p, °CT
orque, Nm
Days
% of T
otal sites attacked
Max pit depth,
mm
Ferralium
(W)
308.5
302
0.08904L (W
)30
8.530
300.74
958 (C )
258.5
608
0.38F
erralium (C
)30
8.530
312.21
IN862 (C
)30
2.860
331.23
IN862 (C
)30
8.560
391.75
CN
7M (C
)30
2.860
692.93
CF
8M (C
)30
2.860
743.59
CN
7MS
(C )
302.8
6084
3.53(W
)=wrought (C
)= Cast
Bradken T
acoma A
lloy 958 is superior to all the cast grades tested. This includes those
tested at thelow
er torque level and cast Ferralium
whose test duration w
as only 30 days. T
wo w
rought alloys are also shown, w
ith Ferralium
superior 904L.
AO
D R
efinedB
radken Tacom
a Alloy 958 w
as developed by Bradken T
acoma F
oundry as a cast D
uplex Stainless steel corrosion resistant m
aterial for chloride containing environments.
In addition to its unique chemical com
position, further enhancement is achieved by
employing the A
rgon Oxygen D
ecarburization (AO
D) process. T
his ensures that the desired low
carbon contentand beneficial nitrogen level is easily controlled. In addition, an extrem
ely low sulfur content is achieved w
hich results in a cleaner and higher quality casting.
References
[1] A. Pozansky, "The Corrosion Resistance of 25Cr-3.5Mo-6N
i and 25Cr-4.5Mo-6N
i Cast Duplex Stainless
Steel," in ASM M
etals Congress, St. Louis, 1982.
[2] E. Lizlovs, "Climax of M
olybdenum," Co. of M
ichigan, Report No. RP-33-80-08, 1981.
[3] A. Garner, "M
aterials Selection for Bleached Pulp Washers," Pulp &
Paper, vol. 82, no. 12, pp. T414-7425, D
ecember, 1981.
[4] H. H
ack, "Crevice Corrosion Behavior of 45 Molybdenum
-Containing Stainless Steels in Seawater,"
Corrosion, Paper No. 65 , 1982.
[5] R. Kain, "Crevice Corrosion Resistance of Several Iron and Nickel Base Cast Alloys in Seaw
ater," Corrosion, no. 66, 1982.
Recommended