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Up Topic Welding Industry / ASME Codes / QW-253 vs. QW-253.1 ASME IX Ed. 2010
- - By SalemWldR Date 03-02-2016 06:31
Dear Experts,

I would like to clarify the following as per ASME IX Ed. 2010

I have a weld overlay procedure (PQR) as follows

Base Material: SA 366 Gr. 6
P No. 1
G. No. 1
Filler Spec: SFA 5.4
CVN: WCL, FL + 1mm , FL + 5mm

Production welds as follows;
Base Material: SA 350 LF2
P No. 1
G. No. 2
CVN: Impact Toughness Required

My question would be:

If impact toughness is required, can I use the PQR stated to weld the production pipe?

My understanding is that the supplementary essential variable only refers to QW-253 . For overlay, it does not state in QW-253.1
Parent - By Jmaziyar (*) Date 03-05-2016 09:54
you right.

as i know and as mentioned in QW.253.1 , overly concept is corrosion and hard facing resistance.  this layer has not any role in mechanical properties. therefore CVN not related to overlay.
Up Topic Welding Industry / ASME Codes / QW-253 vs. QW-253.1 ASME IX Ed. 2010

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