ASME SA-961 Specyfication for Common Requirements for Steel Flanges, Forged Fittings, Valves and Parts for Piping Applications

SPECIFICATION FOR COMMON REQUIREMENTSFOR STEEL FLANGES, FORGED FITTINGS, VALVES,

AND PARTS FOR PIPING APPLICATIONS

SA-961

(Identical with ASTM Specification A 961-99.)

1. Scope

1.1 This specification covers a group of commonrequirements that shall apply to steel flanges, forgedfittings, valves, and parts for piping applications underany of the following individual Product Specifications:

ASTMTitle of Specification Designation

Forgings, Carbon Steel, for Piping A 105/A 105MComponents

Forgings, Carbon Steel, for General-Purpose A 181/A 181MPiping

Forged or Rolled Alloy-Steel Pipe Flanges, A 182/A 182MForged Fittings, and Valves and Parts forHigh Temperature Service

Forgings, Carbon and Low Alloy Steel, A 350/A 350MRequiring Notch Toughness Testing forPiping Components

Forgings, Carbon and Alloy Steel, for Pipe A 694A/694MFlanges, Fittings, Valves, and Parts forHigh-Pressure Transmission Service

Flanges, Forged, Carbon and Alloy Steel for A 707/A 707MLow Temperature Service

Forgings, Carbon Steel, for Piping A 727/A 727MComponents with Inherent Notch Toughness

Forgings, Titanium-Stabilized Carbon Steel, A 836/A 836Mfor Glass-Lined Piping and Pressure VesselService

1.2 In case of conflict between a requirement of theindividual Product Specification and a requirement ofthis General Requirement Specification, the require-ments of the individual Product Specification shallprevail over those of this specification.

1.3 By mutual agreement between the purchaser andthe supplier, additional requirements may be specified(see section 4.1.2). The acceptance of any such addi-tional requirements shall be dependent on negotiations

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with the supplier and must be included in the orderas agreed upon by the purchaser and supplier.

1.4 The values stated in either inch-pound units orSI units (metric) are to be regarded separately asstandard. Within the text and the tables, the SI unitsare shown in brackets. The values stated in each systemare not exact equivalents; therefore each system mustbe used independently of the other. Combining valuesfrom the two systems may result in nonconformancewith the specification. The inch-pound units shall applyunless the ‘‘M’’ designation (SI) of the Product Specifi-cation is specified in the order.

2. Referenced Documents

2.1 ASTM Standards:A 105/A 105M Specification for Carbon Steel Forgings

for Piping ApplicationsA 181/A 181M Specification for Carbon Steel Forgings

for General-Purpose PipingA 182/A 182M Specification for Forged or Rolled Alloy-

Steel Pipe Flanges, Forged Fittings, and Valves andParts for High Temperature Service

A 275/A 275M Test Method for Magnetic Particle Exam-ination of Steel Forgings

A 350/A 350M Specification for Carbon and Low AlloySteel Forgings, Requiring Notch Toughness Testingfor Piping Components

A 370 Test Methods and Definitions for Mechanical Test-ing of Steel Products

A 694/A 694M Specification for Carbon and Alloy SteelForgings for Pipe Flanges, Fittings, Valves, and Partsfor High-Pressure Transmission Service

PART A — FERROUS MATERIAL SPECIFICATIONS SA-961

A 700 Practices for Packaging, Marking, and LoadingMethods for Steel Products for Domestic Shipment

A 707/A 707M Specification for Forged Carbon andAlloy Steel Flanges for Low Temperature Service

A 727/A 727M Specification for Carbon Steel Forgings,for Piping Components with Inherent Notch Toughness

A 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel Products

A 836/A 836M Specification for Titanium-StabilizedCarbon Steel Forgings for Glass-Lined Piping andPressure Vessel Service

A 941 Terminology Relating to Steel, Stainless Steel,Related Alloys, and Ferroalloys

A 967 Specification for Chemical Passivation Treatmentsfor Stainless Steel Parts

E 165 Test Method for Liquid Penetrant ExaminationE 381 Method of Macroetch Testing Steel Bars, Billets,

Blooms, and ForgingsE 709 Guide for Magnetic Particle Examination

2.2 ASME Standard:ASME Boiler and Pressure Vessel Code Section IX

2.3 Military Standard:MIL-STD-163 Steel Mill Products, Preparation for Ship-

ment and Storage

2.4 Other Standard:SP25 Standard Marking System of Valves, Fittings,

Flanges and Unions

3. Terminology

3.1 Definitions of Terms Specific to This Standardand Related Individual Product Specifications:

3.1.1 bar, n — a solid rolled or forged sectionthat is long in relationship to its cross sectional dimen-sions, with a relatively constant cross section throughoutits length. A wrought microstructure is required.

3.1.2 certifying organization, n — the companyor association responsible for the conformance of, andmarking of, the product to the specification require-ments.

3.1.3 fitting, n — a component for non-boltedjoints in piping systems.

3.1.4 flange, n — a component for bolted jointsused in piping systems.

3.1.5 forging, n — the product of a substantiallycompressive hot or cold plastic working operation thatconsolidates the material and produces the requiredshape. The plastic working must be performed by a

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forging machine, such as a hammer, press, or ring rollingmachine, and must deform the material to produce awrought structure throughout the material cross section.

3.1.6 seamless tubing, n — a tubular productmade without a welded seam. It is manufactured usuallyby hot working the material, and if necessary, bysubsequently cold finishing the hot worked tubularproduct to produce the desired shape, dimensions andproperties.

4. Ordering Information

4.1 It is the purchaser’s responsibility to specify inthe purchase order all ordering information necessaryto purchase the needed material. Examples of suchinformation include, but are not limited to, the following:

4.1.1 Quantity.

4.1.2Size and pressure class or dimensions. (Toler-ances and surface finishes should be included.)

4.1.3 Specification number with Grade or Class,or both, as applicable, and year/date.

4.1.4 Supplementary requirements.

4.1.5 Additional requirements.

5. Melting Process

5.1 Unless otherwise specified in the individual Prod-uct Specification, the steel shall be fully killed.

5.2 If a specific type of melting is required by thepurchaser, it shall be stated on the purchase order.

5.3 The primary melting may incorporate separatedegassing or refining and may be followed by secondarymelting, such as electroslag remelting or vacuum remelt-ing. If secondary melting is employed, the heat shallbe defined as all of the ingot remelted from a singleprimary heat.

5.4 Steel may be cast in ingots or may be strandcast. When steel of different grades is sequentiallystrand cast, identification of the resultant transitionmaterial is required. The steel producer shall removethe transition material by an established procedure thatpositively separates the grades.

5.5A sufficient discard shall be made from the sourcematerial to secure freedom from injurious porosity andshrinkage, and undue segregation.

SA-961 2001 SECTION II

6. Manufacture

6.1 The finished part shall be manufactured from aforging that is as close as practicable to the finishedsize or shape. Alternative starting materials may be used,but with the following exceptions and requirements.

6.1.1 Bar — Flanges, elbows, return bends, tees,and header tees shall not be machined directly frombar. Other hollow cylindrical shaped parts up to, andincluding, NPS 4 can be machined from bar providedthat the axial length of the part is approximately parallelto the metal flow lines of the starting stock.

6.1.2 Seamless Tubing —Flanges shall not bemachined directly from seamless tubing. Other hollowcylindrical shaped parts up to, and including, NPS 4can be machined from seamless tubing provided thatthe axial length of the part is approximately parallelto the metal flow lines of the starting stock.

7. Heat Treatment

7.1 Material requiring heat treatment shall be treatedas specified in the individual product specification usingthe following procedures that are defined in more detailin Terminology A 941.

7.1.1Full Annealing —Material shall be uniformlyreheated to a temperature above the transformationrange and, after holding for a sufficient time at thistemperature, cooled slowly to a temperature below thetransformation range.

7.1.2Solution Annealing —Material shall be heatedto a temperature that causes the chrome carbides togo into solution, and then, quenched in water or rapidlycooled by other means to prevent reprecipitation.

7.1.3Isothermal Annealing —Isothermal annealingshall consist of austenitizing a ferrous alloy, and then,cooling to and holding within the range of temperatureat which the austenite transforms to a relatively softferrite-carbide aggregate.

7.1.4 Normalizing — Material shall be uniformlyreheated to a temperature above the transformationrange, and subsequently, cooled in air at room temper-ature.

7.1.5Tempering and Post-Weld Heat Treatment —Material shall be reheated to the prescribed temperaturebelow the transformation range, held at temperature forthe greater of 30 min or 1 h/in. [25.4 mm] of thicknessat the thickest section and cooled in still air.

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7.1.6 Stress Relieving —Material shall be uni-formly heated to the selected stress relieving tempera-ture. The temperature shall not vary from the selectedtemperature by more than ± 25°F [±14°C].

7.1.7 Quench and Temper —Material shall befully austenitized and quenched immediately in a suit-able liquid medium. The quenched fittings shall bereheated to a minimum temperature of 1100°F [590°C]and cooled in still air.

8. Chemical Requirements

8.1Chemical Analysis —Samples for chemical analy-sis and methods of analysis shall be in accordancewith Test Methods, Practices and Terminology A 751.

8.2 Heat Analysis —An analysis of each heat of steelshall be made by the steel manufacturer to determine thepercentages of those elements specified in the individualProduct Specification. If secondary melting processesare employed, the heat analysis shall be obtained fromone remelted ingot, or the product of one remeltedingot, from each primary melt. The chemical analysisthus determined shall conform to the requirements of theindividual Product Specification. Note that the ProductAnalysis (Check Analysis) tolerances are not to beapplied to the Heat Analysis requirements.

8.3 Product Analysis —If a product analysis isperformed it shall be in accordance with Test Methods,Practices, and Terminology A 751. Samples for analysisshall be taken from midway between center and surfaceof solid parts, midway between inner and outer surfacesof hollow parts, midway between center and surfaceof full-size prolongations or from broken mechanicaltest specimens. The chemical composition thus deter-mined shall conform to the limits of the ProductSpecification, within the permissible variations of Table1 or Table 2 of this specification, as appropriate forthe grade being supplied.

9. Mechanical Requirements

9.1 Method of Mechanical Tests —All tests shallbe conducted in accordance with Test Methods andDefinitions A 370.

9.2 For the purpose of determining conformance tothe Product Specification requirements, specimens shallbe obtained from the production forgings, or fromseparately forged test blanks prepared from the stockused to make the finished product. In either case,mechanical test specimens shall not be removed until


after all heat treatment is complete. If repair weldingis performed, test specimens shall not be removeduntil after post-weld heat treatment is complete, unlesspermitted by the Product Specification. The locationsfrom which test specimens are removed shall be inaccordance with the Product Specification.

9.3 If separately forged test blanks are used, theyshall be of the same heat of steel, be subjected tosubstantially the same reduction and working as theproduction forging they represent, be heat treated inthe same furnace charge except as provided for in thereduced testing provisions of the product specification,under the same conditions as the production forging,and be of the same nominal thickness as the maximumheat treated thickness of the production forging.

9.4 When parts are machined from bar or seamlesstubing, as permitted in 6.1.1 and 6.1.2, the mechanicalproperties may be determined for the parts from thestarting material, if the parts have not been subjectedto any subsequent thermal processing since the timeof mechanical test.

10. Hardness Requirements

10.1 The part shall conform to the hardness require-ments prescribed in the Product Specification.

10.2 Sampling for hardness testing shall conform tothe Product Specification.

11. Tensile Requirements

11.1 Sampling for tensile testing shall conform tothe Product Specification.

11.2 When the dimensions of the material to betested will permit, the tension test specimens shall bemachined to standard round 2-in. [50-mm] gage lengthtension test specimen described in Test Methods andDefinitions A 370.

11.3 In the case of small sections, which will notpermit taking of the standard test specimen describedin 11.2, the subsize round specimen shall be machinedas described in Test Methods and Definitions A 370.The tension test specimen shall be as large as feasible.

11.4 The results of the tensile tests shall conformto the tensile property requirements prescribed in theProduct Specification.

11.5 If the results of tension tests do not conform tothe requirements specified in the Product Specification,

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retests are permitted as outlined in Test Methods andDefinitions A 370. If the results of any tension testspecimen are less than specified because a flaw becomesevident in the test specimen during testing, a retest shallbe allowed provided that the defect is not attributable toruptures, cracks, or flakes in the steel.

12. Impact Requirements

12.1 The part shall conform to the impact require-ments prescribed in the Product Specification.

12.2 Sampling for impact testing shall conform tothe Product Specification.

12.3 If the average impact energy value meets theProduct Specification requirements, but the energy valuefor one specimen is below the specified minimum valuefor individual specimens, a retest is permitted. Thisshall consist of two impact specimens from a locationadjacent to, and on either side of, the specimen thatfailed. Each of the retested specimens must exhibit anenergy value equal to or greater than the minimumaverage value required by the Product Specification.

13. Hydrostatic Test Requirements

13.1Parts manufactured under this specification shallbe capable of passing a hydrostatic test compatiblewith the rating of the finished part. Such tests shallbe conducted by the supplier only when the hydrostatictest Supplementary Requirement in the Product Specifi-cation is invoked by the purchaser.

14. Rework

14.1When one or more representative test specimensor retest specimens do not conform to the requirementsspecified in the Product Specification for the testedcharacteristic, the product may be reworked accordingto the following requirements.

14.1.1 If previously tested in the unheat treatedcondition, the product may be reworked by heat treat-ment, and subsequently retested, in accordance withthe Product Specification.

14.1.2 If previously tested in the heat treatedcondition, the product may be reworked by reheattreatment, and subsequently retested, in accordance withthe Product Specification.


15. Finish and Appearance

15.1 The parts shall conform to the dimensions,tolerances and finish as specified on the purchaser’sdrawing or order.

15.2 The finished parts shall be cleaned to removeall scale and processing compounds prior to the finalsurface examination. The cleaning process shall notinjure the surface finish, material properties, or themetallurgical structure. The cleaned parts shall be pro-tected to prevent recontamination. Protective coatingson parts subsequently subjected to socket welds or buttwelds shall be suitable for welding without removalof the coating. When specified in the purchase order,parts may be furnished in the as-formed or as-forgedcondition.

15.3The parts shall be free of injurious imperfectionsas defined below. At the discretion of the inspectorrepresenting the purchaser, finished parts shall be subjectto rejection if surface imperfections acceptable under15.5 are not scattered, but appear over a large area.

15.4 Depth of Injurious Imperfections —Selectedtypical linear and other typical surface imperfectionsshall be explored for depth. When the depth encroacheson the minimum specified wall thickness of the finishedpart, such imperfections shall be considered injurious.

15.5 Imperfections Not Classified as Injurious —Surface imperfections not classified as injurious shallbe treated as follows:

15.5.1 Seams, laps, tears, or slivers not deeperthan 5% of the actual wall thickness at the point ofinterest or 1⁄16 in. [1.6 mm], whichever is less, areacceptable. If deeper, these imperfections require re-moval, and shall be removed by machining or grinding.

15.5.2 Mechanical marks or abrasions and pitsshall be acceptable without grinding or machining pro-vided the depth does not exceed1⁄16 in. [1.6 mm]. Ifsuch imperfections are deeper than1⁄16 in. [1.6 mm]but do not encroach on the minimum wall thicknessof the forging they shall be removed by machining orgrinding to sound metal.

15.5.3The wall thickness at the point of grinding,or at imperfections not required to be removed, shallbe determined by deducting the amount removed bygrinding, from the nominal finished wall thickness ofthe part. In any case, the wall thickness shall not beless than the specified minimum value.

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16. Repair by Welding

16.1The purchaser may require the supplier to submitproposed weld repairs for approval by invoking theappropriate Supplementary Requirement from the appli-cable Product Specification in the purchase order. Ifthe purchaser does not require prior approval of pro-posed weld repairs, these repairs shall be permitted atthe discretion of the supplier. All weld repairs shallbe performed in accordance with the following limita-tions and requirements.

16.1.1 The welding procedure and welders shallbe qualified in accordance with Section IX of theASME Boiler and Pressure Vessel Code.

16.1.2 Defects shall be completely removed priorto welding by chipping or grinding to sound metal.Removal of these defects shall be verified by magneticparticle inspection in accordance with Test MethodA 275 or Practice E 709 for the ferritic, martensitic,or ferritic/austenitic grades, or by liquid penetrant in-spection in accordance with Practice E 165 for ferritic,martensitic or austenitic grades.

16.1.3After repair welding, the welded area shallbe ground smooth to the original contour and shall becompletely free of defects as verified by magneticparticle or liquid penetrant inspection, as applicable.

16.1.4 Repair by welding shall not exceed 10%of the surface area of the part, or 331⁄3% of the wallthickness of the finished product, or3⁄8 in. [10 mm]deep at the location of the repair.

16.2 The weld repair shall conform to 9.2 and tothe additional requirements, if any, invoked in theProduct Specification.

17. Inspection

17.1The supplier shall afford the purchaser’s inspec-tor all reasonable facilities necessary to satisfy himthat the material is being produced and furnished inaccordance with the General Specification and the appli-cable Product Specification. Site inspection by the pur-chaser shall not interfere unnecessarily with the suppli-er’s operations.

18. Rejection and Rehearing

18.1 Samples representing material rejected by thepurchaser shall be preserved until disposition of theclaim has been agreed to between the supplier and thepurchaser.


19. Certification

19.1 Marking of the ASTM specification numberand manufacturer’s name or trademark on the parts,and printing of the same on test reports, when required,shall be certification that the parts have been furnishedin accordance with the requirements of the specification.

19.2 Test reports shall be traceable to the heatidentification on the parts. They shall contain the infor-mation specified by the Product Specification and thepurchaser order. They shall include the specificationnumber and year/date of issue.

19.3 A certificate printed from or used in electronicdata interchange (EDI) transmission shall be regardedas having the same validity as a counterpoint printed inthe certifiers facility. The content of the EDI transmitteddocument shall conform to any existing EDI agreementbetween the purchaser and supplier.

19.4 Not withstanding the absence of a signature,the organization submitting either a printed certificateor an EDI transmitted certificate is responsible for thecontent of the report.

20. Marking

20.1 Each piece shall be legibly marked with theASTM specification number, grade and class, certifyingorganization’s name or symbol, the heat number or

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heat identification, size, and service rating, if applicable.It is not required to mark the product with the specifica-tion year and date of issue. The Standard MarkingSystem of Valves, Fittings, Flanges and Unions (SP25) may be followed except the word “steel” shall notbe substituted for the ASTM designation.

20.2Product marking shall conform to the additionalrequirements, if any, invoked in the Product Specifica-tion or Purchase Order.

21. Packaging, Marking and Loading forShipment

21.1 Packaging, marking, and loading for shipmentshall be in accordance with Practice A 700.

21.2 When specified in the contract or order, andor direct procurement by or direct shipment to thegovernment, when Level A is specified, preservation,packaging, and packing shall be in accordance withLevel A requirements of MIL-STD-163.

22. Keywords

22.1 alloy steel; carbon steel; fittings; flanges; forg-ings; general requirement; piping applications; pressurecontaining parts; stainless steel; temperature serviceapplications – elevated; temperature service applica-tions – high; valves


TABLE 1PRODUCT ANALYSIS TOLERANCES FOR HIGHER

ALLOY AND STAINLESS STEELSA

Tolerance Overthe MaximumLimit or Under

Limit or Maximum of the MinimumElement Specified Range, Wt % Limit

Carbon 0.030, incl 0.005over 0.030 to 0.20 incl. 0.01

Manganese to 1.00 incl. 0.03over 1.00 to 3.00 incl. 0.04over 3.00 to 6.00 0.05over 6.00 to 10.00 0.06

Phosphorous to 0.040, incl. 0.005sulfur 0.030, incl. 0.005Silicon to 1.00, incl. 0.05

over 1.00 to 5.00, incl. 0.10Chromium over 4.00 to 10.00, incl. 0.10

over 10.00 to 15.00, incl. 0.15over 15.00 to 20.00, incl. 0.20over 20.00 to 27.50 ,incl. 0.25

Nickel to 1.00, incl. 0.03over 1.00 to 5.00 incl. 0.07over 5.00 to 10.00 incl. 0.10over 10.00 to 20.00 incl. 0.15over 20.00 to 22.00 incl. 0.20

Molybdenum to 0.20 incl. 0.01over 0.20 to 0.60 incl. 0.03over 0.60 to 2.00 incl. 0.05over 2.00 to 7.00 incl. 0.10

Titanium all ranges 0.05Columbium(Niobium) all ranges 0.05

+ TantalumColumbium(Niobium) 0.05 to 0.20, incl. 0.01

Tantalum to 0.10 incl. 0.02Cobalt 0.05 to 0.20, incl. 0.01B

Nitrogen to 0.19 incl. 0.01over 0.19 to 0.25 0.02over 0.25 to 0.35 0.03over 0.35 to 0.45 0.04over 0.45 to 0.60 0.05

Aluminum to 0.05 incl. 0.01Vanadium to 0.10 incl. 0.01

over 0.10 to 0.25 incl. 0.02Cerium 0.03 to 0.08 −0.005

+0.01

A This table does not apply to heat analysis.B Product analysis limits for cobalt under 0.05% have not beenestablished and the producer should be consulted for those limits.

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TABLE 2PRODUCT ANALYSIS TOLERANCES FOR LOW ALLOY STEELSA

Limit or Maximum of 100 in.2 (6.45 × 104 mm2), Over 100 to 200 in.2 Over 200 to 400 in. 2

Element Specified Range, Wt % or less (1.290 × 105 mm2), incl (2.581 × 105 mm2), incl Over 400 in.2

Mn to 0.90 incl 0.03 0.04 0.05 0.06over 0.90 to 1.00, incl 0.04 0.05 0.06 0.07

P to 0.045, incl 0.005 0.010 0.010 0.010S to 0.045, incl 0.005 0.010 0.010 0.010Si to 0.40 incl 0.02 0.02 0.03 0.04

over 0.40 to 1.00, incl 0.05 0.06 0.06 0.07Cr to 0.90, incl 0.03 0.04 0.04 0.05

over 0.90 to 2.10, incl 0.05 0.06 0.06 0.07over 2.10 to 3.99, incl 0.10 0.10 0.12 0.14

Ni to 0.50 0.03 0.03 0.03 0.03Mo to 0.20 incl 0.01 0.01 0.02 0.03

over 0.20 to 0.40, incl 0.02 0.03 0.03 0.04over 0.40 to 1.15 0.03 0.04 0.05 0.06

Cu to 1.00, incl 0.03 0.03 0.03 0.03over 1.00 to 2.00, incl 0.05 0.05 0.05 0.05

Ti to 0.10 0.01 0.01 0.01 0.01V to 0.10, incl 0.01 0.01 0.01 0.01

over 0.10 to 0.25, incl 0.02 0.02 0.02 0.02over 0.25 to 0.50, incl 0.03 0.03 0.03 0.03

GENERAL NOTE: Tolerance Over Maximum Limit or Under Minimum Limit for Size Ranges Shown, Wt%B.

A product Analysis for C, B, Cb and Ca shall conform to the Product Specification.B Cross-sectional area.

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SUPPLEMENTARY REQUIREMENTS

S1. Macroetch Test

S1.1A sample forging shall be sectioned and etchedto show flow lines and internal imperfections. The testshall be conducted according to Method E 381.

S1.2 Acceptance limits shall be as agreed uponbetween the certifying organization and the purchaser.

S2. Heat Analysis

S2.1 When secondary melting processes are em-ployed, a heat analysis shall be obtained from eachremelted ingot, or the product of each remelted ingot,from each primary melt. The chemical analysis thusdetermined shall conform to the requirements of theindividual Product Specification. Note that the ProductAnalysis (Check Analysis) tolerances are not to beapplied to the Heat Analysis requirements.

S3. Product Analysis

S3.1 A product analysis shall be made from onerandomly selected forging representing each heat. Theresults shall comply with the product analysis limitslisted in the applicable Product Specification.

S3.2 If the analysis fails to comply, each forgingshall be checked or the lot rejected. All results shallbe reported to the purchaser.

S4. Tension Tests

S4.1 In addition to the requirements of Section9, one tension specimen shall be obtained from arepresentative forging from each heat at a locationagreed upon between the certifying organization andthe purchaser. The results of the test shall comply withthe tensile property requirements listed in the applicableProduct Specification and shall be reported to thepurchaser.

S5. Impact Tests

S5.1 In addition to the requirements of Section 9,three CVN impact energy specimens shall be obtained

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from a representative forging from each heat at alocation agreed upon between the certifying organizationand the purchaser. The results of the test shall complywith the CVN impact energy requirements listed in theapplicable Product Specification and shall be reportedto the purchaser.

S6. Magnetic Particle Examination

S6.1 All accessible surfaces of the finished forgingshall be examined by a magnetic particle method. Themethod shall be in accordance with Test Method A 275.Acceptance limits shall be as agreed upon between thecertifying organization and the purchaser.

S7. Liquid Penetrant Examination

S7.1 All accessible surfaces shall be examined bya liquid penetrant method in accordance with PracticeE 165. Acceptance limits shall be as agreed upon be-tween the certifying organization and the purchaser.

S8. Hydrostatic Testing

S8.1 A hydrostatic test at a pressure agreed uponbetween the Certifying Organization and the purchasershall be applied by the certifying organization.

S9. Repair Welding

S9.1 No repair welding shall be permitted withoutprior approval of the purchaser. If permitted, the restric-tions of Section 16 shall apply.

S10. Electropolished Austenitic and Ferritic–Austenitic Grades

S10.1All electropolished austenitic and ferritic–aus-tenitic products shall be of a cleanliness in accordancewith Specification A 967.

S10.2Details concerning which test method of Speci-fication A 967 are to be a matter of agreement betweenthe manufacturer and the purchaser.


ANNEX

(Mandatory Information)

A1. REQUIREMENTS FOR THEINTRODUCTION OF NEW MATERIALS

A1.1 New materials may be proposed for inclusionin specifications referencing this specification of generalrequirements subject to the following conditions:

A1.1.1 Application for the addition of a new gradeto a specification shall be made to the chairman ofthe subcommittee, which has jurisdiction over thatspecification.

A1.1.2 The application shall be accompanied bya statement from at least one user indicating that thereis a need for the new grade to be included in theapplicable specification.

A1.1.3 The application shall be accompanied bytest data as required by the applicable specification.Test data from a minimum of three test lots, as definedby the specification, each from a different heat, shallbe furnished.

A1.1.4 The application shall provide recommenda-tions for all requirements appearing in the applicablespecification.

A1.1.5 The application shall state whether or notthe new grade is covered by patent.

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