ASME SECTION IX-QW-420-1 P Numbers
ASME SECTION IX-QW-420-1 P Numbers
(OP)
Hello all,
I have welders qualified on P1(carbon steel GTAW)and P8(stainless steel GTAW)
Can I utilize those welders to weld a dissimilar metal P1+P8 ?
Please Help
Thanks,
klln
I have welders qualified on P1(carbon steel GTAW)and P8(stainless steel GTAW)
Can I utilize those welders to weld a dissimilar metal P1+P8 ?
Please Help
Thanks,
klln





RE: ASME SECTION IX-QW-420-1 P Numbers
My recommendation is to use the following;
if the service temperature of the joint is BELOW 700 deg F, use ER 309 filler metal.
if the service temperature of the joint is at or above this temperature use Inconel filler metal. This will require you to qualify the welders separately for this filler metal (F-43), and a new welding procedure using F-43 filler metal.
RE: ASME SECTION IX-QW-420-1 P Numbers
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