Monday, March 31, 2014

RE: [MW:20444] Premature Root bend failure of dissimilar strength materials

Did you pre heat this material @ 300f and hold during welding?

 

           Regards

Tony QA/QC Manager

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of manpreet
Sent: Sunday, March 30, 2014 10:26 PM
To: materials-welding
Subject: [MW:20439] Premature Root bend failure of dissimilar strength materials

 


Gents,

 

Please share thoughts on this subject:-

 

Mat A :- API 5L X70

Mat B :- ASTM A105N

Process :- GMAW (STT)/FCAW

Dia:- 600NB

Thk :- 16.01mm for Pipe and 17.48 for Flange

 

Root bend Failure, Retests failed as well.

 

Regards.


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