[MW:17607] RE: 17605] Impact test for A106

Hello PVT,

 

Usually A/SA 106 is not a reliable material for design temperature  below -20 DegC. If the use of C-Mn steel is insisted  A/SA -333 Gr-6 would be the choice. By definition , materials falling under this specification( A/SA-333 ) are meant for low- temperature applications.

 

If the lowest design temperature is -150 DegC( as mentioned below), then the choice should be austenitic S.S grades, 304L or 316L by default.

 

Thanks

 

Pradip Goswami,P.Eng.IWE

Welding & Metallurgical Specialist

Ontario, Canada.

Email-pgoswami@sympatico.ca,

pgoswami@quickclic.net

 

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From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of PVT
Sent: Monday, May 06, 2013 6:19 AM
To: materials-welding@googlegroups.com
Subject: [MW:17605] Impact test for A106

Dear Experts,

 

Process piping with material A106- thickness = 35 mm, design temp: 0 - 150 °C . My question: As per ASME B31.3, impact test for weld joint is required or not? If required, what temperature to impact test?

 

Thanks!

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