Hi Uday,
Choice of S.S 304 may be correct for the said design temperature(425 Deg C). In order to keep the IGC/ sensitization factor under control use 308L welding consumables/fillers would be advisable.
It would be good to know what's the process fluid involved? If the process fluid is aggressive, then a switch to SS 316/316L would be a better choice. This would be a process engineer/metallurgical engineers' call to select 304 or other alternatives (316/316L) as needed.
Thanks
Pradip Goswami.P.Eng, IWE.
Independent Welding & Metallurgical Engineering Specialist
Saudi Aramco Approved Designated Project Welding Engineer (DPWR)
Qatar Petroleum Approved, SME-Materials & Corrosion Engineering.
Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/
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Austenitic Stainless Steel Sensitization | Austral Wright Metals
From: uday prabhu <uday31@gmail.com>
Sent: November 6, 2021 8:46 AM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: Alternative MOC - SA387 + SS.304 cladding to complete SS.304
Dear Experts,
Vessel MOC = SA387 GR F11 CL2 + 3mm SS.304 cladding
Max operating Temp = 425 C
Max Pr = 20 bar (g)
Can we replace above moc with SS.304.
Will there be Sensitization issues a this temp ??
Regards,
Uday Prabhu
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