ASME B31.1 says 1 1/4Cr 1/2Mo welds with less than 1/2" wall thickness do not need PWHT.
I am asking for professional advice.
In repair of a finished stationary part of a machine that dose not come under heavy load but operates @ 900 deg F.
Very small amounts of weld was deposited in areas of erosion and machined and hand worked back to original print.
Base metal varys from 1" to 3" but the weld never exceeds 3/32" in thickness, area may be 1/2 to 3 Sq Inches
Filler material was 8018B-2 and 80S-B2.
Am I correct that by virtue of B31.1 I do not need to perform a PWHT?