B2.1-1/8-227:2023 - STANDARD WELDING PROCEDURE SPECIFICATION (SWPS) FOR GTAW OF CARBON STEEL (M-1/P-1, GROUPS 1 OR 2) TO AUSTENITIC STAINLESS STEEL (M-8/P-8, GROUP 1), 1/16 IN. [1.5MM] THROUGH 1-1/2 IN. [38MM] THICK, ER309(L), IN THE AS-WELDED CONDITION, PRIMARILY PIPE APPLICATIONS
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This standard contains the essential welding variables for carbon steel to austenitic stainless steel in the thickness range of 1/16 inch [1.5 mm] through 1-1/2 inch [38 mm], using manual gas tungsten arc welding. It cites the base metals and operating conditions necessary to make the weldment, the filler metal specifications, and the allowable joint designs for groove and fillet welds. This SWPS was developed primarily for pipe applications.