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Re: [MW:34969] Welder qualification

By Materials & Welding

Dear Saleem,

When qualifying a welder, it's crucial to ensure that the welding procedure specification (WPS) matches the materials being welded. While it's possible to use carbon steel (CS) material for welder qualification, it's not advisable if you intend to weld stainless steel (SS) later on.

The reason is that CS and SS have different metallurgical properties, including composition, thermal conductivity, and susceptibility to corrosion. Welding procedures and parameters that work well for CS may not be suitable for SS, and vice versa. Therefore, using CS material for welder qualification with an SS WPS may not accurately reflect the welder's ability to work with SS.

For a valid qualification, it's best to use the same material (SS) for both the WPS and the qualification test. This ensures that the welder's skills are properly assessed for the specific material they will be working with in practice. If you need to qualify welders for both CS and SS welding, you should have separate WPSs and qualification tests for each material.

Regards,

AB


On Tue, 7 May 2024 at 22:06, saleem manhappulath <saleemm9526@gmail.com> wrote:
Dear All


    I have a ss wps P-8 to P8, i have plan to qualify welder. Can I use cs material for welder qualification with ss wps

Thanks & Best Regards
Saleem manhappulath

Mob:+966533595849
WhatsApp:+919526445936

From iPhone xs

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Best regards,

Amol K.B
B.E(Mech), CSWIP 3.2.2, NACE CIP 1 & ASNT LII(4M)

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