AWS B2.1-4-220

Standard Welding Procedure Specification (SWPS) for Gas Tungsten Arc Welding (Consumable Insert Root) of Chromium-Molybdenum Steel (M-4/P-4 Group 1 or 2) 1/8 through 1/2 in. Thick As-Welded Condition; 1/8 through 3/4 in. Thick PWHT Condition IN515 and ER80S-B2 Primarily Pipe

Published by	Publication Date	Number of Pages
AWS	1999	26

AWS B2.1-4-220 – Standard Welding Procedure Specification (SWPS) for Gas Tungsten Arc Welding (Consumable Insert Root) of Chromium-Molybdenum Steel (M-4/P-4 Group 1 or 2) 1/8 through 1/2 in. Thick As-Welded Condition; 1/8 through 3/4 in. Thick PWHT Condition IN515 and ER80S-B2 Primarily Pipe

FIRST EDITION

The data to support this Standard Welding ProcedureSpecification (SWPS) were derived from the above-listed ProcedureQualification Records (PQRs) which were reviewed and validatedunder the auspices of the Welding Research Council. This SWPS isnot valid using conditions and variables outside the ranges listed.The American Welding Society considers that this SWPS presentsinformation for producing an acceptable weld using the conditionsand variables listed. The user needs a significant knowledge ofwelding and accepts full responsibility for the performance of theweld and for providing the engineering capability qualifiedpersonnel and proper equipment to implement this SWPS.