Dear experts,
Kindly explain about PWHT requirement while welding two materials among which one require PWHT by code and other does not (Eg; P15E to P3 materials).
What should be the cycle that must be followed, Is it the same that of P 15E to P 15E?. Considering the lower critical temperature of P3 material , I select 700-730°C temperature range for PWHT of P15E to P3 (correct me if I am wrong).
P15E to P15E PWHT cycle that we are following is attached.
S.Binoy
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