Welder qualification using CS instead of SS

[EslamSH]

Hi,
Some manufacturers qualify welders using carbon steel base metal, in lieu of stainless base metal, with SS filler".

How about requirement of QW301.2 "the performance qualification test shall be in accordance with qualified WPS or SWPS"?!
BR,
Eslam

 

[weldstan]

It has long been permitted to lower costs of welder qualification.

 

[david339933]

See QW-423.1

 

[DVWE]

How about requirement of QW301.2 "the performance qualification test shall be in accordance with qualified WPS or SWPS"?!

Just remember that Section IX defines the minimum requirements for welding. If you feel the need to go above and beyond the code requirements, and make your company's welders qualify separately for every material they weld on, you can absolutely do that. But, as posted above, it is not a code requirement to do so.

The devil is in the details; she also wears prada.

 

[weldstan]

To echo DVWE, I always required welders of Monel alloy to qualify on Monel.

 

[EdStainless]

Allowing CS for 304 or 316 welds is common.
With more specialized alloys (duplex SS, SA SS, Ni alloys) we always required qual with the actual materials.

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P.E. Metallurgy, consulting work welcomed