Dear Experts
The temperature range is 0/ +150 Deg C ( design temp ).
Dear Alavi
"the answer is yes the impact test is required for the weld joints and the ideal temperature should be -20"
Please explain to me why temperature should be -20 Deg C while min design temp is 0 Deg C
Thanks to your help
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of bruce alavi
Sent: Monday, May 06, 2013 7:14 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:17608] RE: 17605] Impact test for A106
Pgoswami
I think the question PVT was asking was, is the impact test required for the type of piping material weld joints? and if so at what temperature, I think the temperature range specified in his mail was not 0 to -150 but 0-150C he was not asking which piping materials would be best suitable, but the answer is yes the impact test is required for the weld joints and the ideal temperature should be -20
Very Best Regards
Behrooz Alavi
From: pgoswami <pgoswami@quickclic.net>
To: materials-welding@googlegroups.com
Sent: Monday, May 6, 2013 2:34 PM
Subject: [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
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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