Question about Nickel Base Material

[erichenry]

I need to certify some welders in all nickel base materials. (ex. P41 thur P47). The question I have is there one certain Nickel Base material I can have them do a weld coupon for that will certify them in all Nickel Base material, or do I need to have them do a weld coupon pre material.

 

[weldstan]

Under ASME IX, you can qualify welders on carbon steel coupons using F4X (most commonly F43) welding filler metals to permit them to weld nickel base alloys.