[MW:27517] ASTM A 694 F 65 FLANGES

Hi Experts,

We are using ASTM A 182 F 22 materials in sub sea  tree parts.  These forgings needs to be welded to ASTM A 694 F 65 pup pieces.  We need to do PWHT at 650 deg. C  for 6 hours.  The F 65 forgings can not retain the properties due to PWHT.  Hence we are doing buttering the F 22 and carrying out PWHT and then welding to F 65 forging with out PWHT.  

 I am looking for supplier who can provide the F 65 forgings which can retain its properties with PWHT.  It shall meet the the mechanical properties including hardness ( 250 Hv10)  in the as welded and PWHT condition also.  This will give more savings as we are avoiding buttering.

Please share if your have any details on it.

Regards

Prasad

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