Hi Kunalenfield,
You may use 309L for buttering on carbon steel and subsequent PWHT, provided the design conditions do not exceed the recommendations of API RP-582 as below. A buttering PQR should be established according to ASME Sec-IX , QW -283 . Typical buttering thickness to lesson the effects of welding on the buttered surface should be 3/16". Read the details of QW-283 to establish a buttering followed by welding on the same test coupon.
Thanks.
P.Goswami.P.Eng, IWE.
Independent & Consulting Welding & Metallurgical Specialist
Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/
Email:pgoswami@rogers.com,pradip.goswami@gmail.com
Cell/Whasapp:1-905-9793232
From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> On Behalf Of kunalenfield350@gmail.com
Sent: July 22, 2020 7:54 AM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:31176] Suitability of PWHT on ER309L Buttering over CS
Dear Experts
Need your expert advice that we have a joint of CS to SS, PWHT is applicable for CS. So planned to go for the buttering with ER309L & then PWHT prior welding with SS. Please advise does ER309L has any adverse effect on it if comes under the PWHT cycle applicable for P1 material.
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