Monday, June 7, 2010

[MW:5416] welding A335 P91 with Carbon steel

Sirs,
 
I have a question about welding dissimilar material:
 
One Metal:          A335 P91 ----------------------------------        PNumber 15E
Second Metal      MSS SP75 WPHY-70  ---------------        Snumber 1
 
Wall thickness                                                              36.53 mm
 
Which ones are the best  FILLER METAL for   GTAW?
 
Which ones are the best  FILLER METAL for   SMAW?
 
 
Is it necessary PWHT?
 
Please give a tips.
 
Best Regards
 
Mauricio

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