Monday, April 8, 2013

[MW:17309] PWHT for P15E to P3

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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