meaning of MT, is it any additional heat treatment other than
normalized? some plate MTCs are showing tensile/Yield values after
stress relieved/PWHTed? Is it a code requiement- if it so the holding
temp & time information where I will get (for SA 516Gr 70 material &
SA105/SA350LF2CL1)? Is it like SPWHT of Cr-Mo steels (ASME Sec VIIID2-
3.4 Supplemental Requirements for Cr–Mo Steels). Why SPWHT is required
for Div 1 construction even though we have PQR/WPS for the welding?
2. And for hot tensile test what is the prescribed temperature for
test? Is it a code requirement?
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