Welder performance qualification for steel structure

Can I perform alternative RT test instead of mechanical test on the test coupon?

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Yes you can do it, but limit subsection 4.16.1.1

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@Amsiz Yes, you can. Refer to Clause 4.16.1.1-Substitution of RT for Guided Bend Tests and Clause 4.22.3-RT in AWS D1.1-2015 for more details.

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Acc. to AWS D1.1, alternative RT instead of guide bend test except welding process GMAW-S

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GMAW-S, affix ā€œSā€ means?

GMAW-S is a welding process of GMAW with short circuiting transfer mode.

GMAW-Sp: stray transfer mode
GMAW-P: pulsed transfer mode
GMAW-S: globlar transfer mode.

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