Does B31.3 permit the designer to specify a weld metal that results in a lower tensile/yield strength than that of the unlisted base metal it is joining? The PQR uses A519-4130 joined with E10018-D2 MR. The tensile/yield results for the test specimens are lower than that listed in the ASTM standard for A519-4130 but well over the strength required for its intended application.
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Unlisted Material Weld Qualification 1
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