NATIONAL CERTIFIED PIPE WELDING BUREAU
WELDING PROCEDURE SPECIFICATION
NO. 8-32-1
FOR
GAS TUNGSTEN ARC WELDING (GTAW)
AND
SHIELDED METAL ARC WELDING (SMAW)
OF
AUSTENITIC STAINLESS STEEL PIPES, VALVES, FITTINGS AND FLANGES
USING F-5 ELECTRODE WITHOUT POSTWELD HEAT TREATMENT
NCPWB
This document is the property of
(NCPWB Member Company Name)
This Welding Procedure Specification (WPS) and Procedure Qualification Record(s) (PQR)
are issued by the NCPWB for adoption by its members. Reproduction or
use of this WPS and PQR(s) by anyone other than members of the NCPWB is
prohibited
WELDING PROCEDURE SPECIFICATION (WPS)
Company Name: WPS Number: 8-32-1 Original WPS Date: 3-19-75 Supporting PQRs: 87801, 87802
Revision Number: 3 Revision Date: 10-1-13 87803, 87804
Welding Process: Gas Tungsten Arc (GTAW) / Shielded Metal Arc (SWAW) Type: Manual
Joints (QW-402)
Joint Design: Single-V or U, Double-V or U, Fillets, Repairs, Build-up Details: See Typical Joint Designs
Backing: Optional for GTAW, Required for SMAW Backing Material Type: Stainless Steel, when used
Base Metals (QW-403) Filler Metals (QW-404) Root Balance
P-Number: 8 Group Number: 1 Specification Number (SFA): 5.9 5.4
to P-Number: 8 Group Number: 1 Classification: ERXXX (See below) EXXX-16 (See Below)
Thickness Range F-number: 6 5
Groove Welds: 1/16 to 8 A-Number: 8 8
Fillet Welds: All Maximum Deposited Weld
Pipe Diameter Range Metal Thickness - Groove: 8 8
Groove Welds: >1 O.D. - Fillet: All All
Fillet Welds: All Maximum Bead Thickness: 1/8 3/8
Flux Trade Name: N/A N/A
Consumable Insert: None N/A
Positions (QW-405) Postweld Heat Treatment Technique (QW-410)
(QW-407)
Welding Positions: All Temp. Range: None String or Weave Bead: Either
Welding Progression: Uphill Time Range: N/A Method of Backgouging: None
Preheat and Interpass Electrical Initial and Interpass Cleaning: Grind to re-
Temperature (QW-406) Characteristics move cutting oxide, solvent clean to remove
(QW-409) cutting oil. Grind or wire brush to remove
Minimum Preheat: 50F Current Type: DC slag or silica deposits.
Maximum Interpass: 350F* Polarity: See Table Orifice or Gas Cup Size: #4 to #12
Preheat Maintenance: Not Required Amperage: See Table Oscillation: N/A
Gas (QW-408) Electrode Feed Speed: N/A Contact Tube to Work Distance: N/A
Shielding Gas: 100% Argon Voltage: N/A Multiple or Single Pass: Either
Composition: Welding Gr. Travel Speed: See Table Multiple or Single Electrode: N/A
Flow Rate: 8-20 CFH Tungsten Type: 2% Thoria Peening: Not Permitted
Gas Backing: Ar or N at Tungsten Size: 3/32, 1/8 Other:
5-15 CFH Pulsed Current: None
Trailing Shield: None
Weld Layer Welding
Process
Filler Metal Current
Volts
Travel
Speed *
(ipm)
Other
Class Dia. (in) Type/Polarity Amps Base
Metal Filler Metal
1 GTAW As Above 3/32 or 1/8 DCSP 60-100 2-4 304 308, 308L, 316, 316L
2 GTAW As Above 3/32 or 1/8 DCSP 70-100 2-4 304L 308L, 316, 316L
Balance SMAW As Above 3/32 DCRP 40-80 2-4 316 316, 316L
Balance SMAW As Above 1/8 DCRP 65-110 2-6
316L 316L
Balance SMAW As Above 5/32 DCRP 100-150 321,347 308L, 321
Balance SMAW As Above 3/16 DCRP 120-190 4-8 *These values are recommended
only, not mandatory
The undersigned contractor, a member of the National Certified Pipe Welding Bureau, hereby adopts this
jointly developed procedure as its company Welding Procedure Specification and certifies that this
procedure has been qualified as shown on the attached Procedure Qualification Record.
Contractor:
By: Date:
Title:
WPS 8-32-1 NCPWB Form QW-482 4/87
When welding different types of 300 series
stainless to each other, select a filler metal
designated for both types.
For use by NCPWB members only (NCPWB)
September 20, 2012
Z
Typical Joint Designs Other joint designs shown on Engineering drawings supersede these joint details
Butt welds
Note 1: 1/8 inch maximum except for B31.1 and B31.5 work, 1/16 inch maximum
Fillet, Nozzle and Branch Connection Welds
Socket and Slip-on Flange Welds
T = The nominal thickness of the pipe
X = the lesser of 1.4T or the hub thickness unless another size is shown on the engineering drawings
Y = the lesser of 1.1T or the fitting thickness unless another size is shown on the engineering drawings
Z = for B31.9 work, minimum of the greater of the pipe nominal wall thickness or 14 in. (6 mm) and face
fillet is not required unless specified by the design.
3/32 to 1/8
See note 1
30 to 45
3/32 to 1/8
3/16 Nom. See Note 1
30 to 45
3/32 to 1/8
1/8 min 45 min
Smaller of T or 1/4
X
X
1/16 min
1/16 min
Y Y
Approximately
1/16 before
welding
Size (leg)
Dimension
Throat
dimension
1/16 max
For use by NCPWB Members Only ( NCPWB)
PROCEDURE QUALIFICATION RECORD (PQR)
WPS followed during welding of test coupon: SP-313K, Rev 0 Test Date: 2-3-84
Welding Process(s) used: Shielded Metal Arc Type: Manual
Base Metal Specification: SA-312 type 304 to Base Metal Specification: SA-312 type 304
P-No: 8 Group No: 1 to P-No: 8 Group No: 1 Thickness: 0.280
Plate: Diameter if pipe: 6 Joint Type: Single V-Groove, P-8 Backing Ring, 3/16 Root Gap
Filler Metal Specification: SFA 5.4 AWS Classification: E308-16 F-No.: 5
A-No.: 8 Filler Metal Size: 3/32,1/8 Supplementary Filler Metal: NA
Weld Metal Deposit Thickness : 0.280 Maximum Pass Thickness : 0.12
Preheat Temp (F): 70 Interpass Temp (F): 350 Welding Position/Progression: 1G Rolled
Tungsten Type/Size: NA Current: DC Polarity: RP Travel Speed: below ipm
Postweld Heat Treatment (F): None Heat Treatment Time (Hrs): NA
Shielding Gas Composition : NA CFH Backing Gas: NA CFH
Stringer/Weave Bead: Weave Transfer Mode: NA
Oscillation: NA Single/Multi-Pass: Multi Single/Multi-Arc: Single
Layer Process Filler Class Diameter Amperage Travel Speed (ipm) Other
1
2
3
SMAW
SMAW
SMAW
E308-16
E308-16
E308-16
3/32
1/8
5/32
90
105
100
4.5
2.5
2.5
Reduced Section Tensile Tests
Specimen No. Width/Dia. Thickness Area Ult. Load (lbs) Ult. Stress (psi) Failure
Location
T-1 0.753 0.270 0.203 18,900 93,100 Base Metal
T-2 0.761 0. 261 0.198 18,400 92,900 Base Metal
Guided Bend Tests [ ] QW-452.2 (Side) [ X ] QW-462.3(a) (Trans R&F) [ ]QW-462.3(b)(Long R&F)
Face No defects-acceptable Root No defects-acceptable
Face No defects-acceptable Root No defects-acceptable
Welders Name: Len Wertelet Stamp No. LM Test Number: 846988
Welding Witnessed by : James J. Sekely Specimens Evaluated by : Earl Gallagher, PTL
We Certify that the statements in this record are correct, and that the test coupons were prepared, welded
and tested in accordance with the requirements of Section IX of the ASME Code.
Contractor:
By: Date:
BY:
Chairman, Technical Committee NCPWB Form QW-483 4/87 PQR Number: 87801
For use by NCPWB members only (NCPWB)
NATIONAL CERTIFIED
PIPE WELDING BUREAU
PROCEDURE QUALIFICATION RECORD (PQR)
WPS followed during welding of test coupon: WP-43, Rev 17, 1/21/83 PQR Number: 87802
Welding Process(s) used: GTAW, Manual Date Test Coupon was welded: 2-11-83
Base Metal Specification: SA-240, Type 304 to Base Metal Specification: SA-240, Type 304
P Number: 8 Group No: 1 to P Number: 8 Group No: 1 Plate/Pipe Diameter: Plate
Base Metal Thickne
