Hello Harish,
You require a separate PQR for clad plate welding. Look through ASME Sec-IX. It will tell you the differences between welding techniques and requirements of clad welding and Non-cladded construction.
If there’s a qualified PQR for Carbon Steel welding that may be referred for welding the C.S part of the cladded construction.
For 410s clad restoration one should qualify an overlay PQR.
Thanks.
Pradip Goswami, P.Eng,IWE
Independent Welding & Metallurgical Engineering Specialist
Ontario,Canada.
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Hareesh K V
Sent: Monday, June 13, 2016 9:34 PM
To: materials-welding
Subject: [MW:24939] Making WPS from PQR of CLAD material.
Dear all,
we have qualified a PQR (groove weld) for clad material (SA 240 410S (Clad) to Carbon Steel that is P7 to P1 material) using ER 309L Mo for the clad portion and E7018 for the rest.
Now we have to weld SA240 410S to SA240 410 S material for another job.
My question is, can we use the above said qualified PQR to make a wps of SA240 410S to SA240 410 S material, as other variables are same.
Thanking you,
Hareesh K V
+91-9447625012
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