Friday, April 5, 2019

Re: [MW:29467] Dual PWHT of SS410 after weld overlay of 625

SS type 410 is a P-No 6 material? so the min temp. for PWHT as per Section VIII-1 is 760 degC. However, PWHT is not required for that grade when the conditions of note (a) - Table UHA-32-1 are met.
You are invited to read carrefully the 1st paragraph of UCL-34, especialy if you have welded with an austenitic filler metal

Στις Παρ, 5 Απρ 2019 στις 9:28 π.μ., ο/η Vijay Katkar <katkar.vijay22@gmail.com> έγραψε:
Hi All,

Need your suggestion. 

Is it ok if we do Dual PWHT after 625 weld overlay on SS410 material. 

First PWHT- 685 for 8.5 hrs.
Second PWHT- 660 for 8.5 hrs.

Kindly suggest.

Thank you

Vijay Katkar 

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Dr. Georgios Dilintas,
Dipl. Ing. In Aeronautic and Space Engineering
Ph.D in Mechanics of Solids - Computational Mechanics
A.I.S, A.N.I, IRCA Lead Auditor
Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

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