Wednesday, May 16, 2012

[MW:14289] What is the minimum thkness criteria for change in Impact temperature.

Dear Sir

I have a PQR withASTM A131 EH 36 (Group II )-25mm at -40 Deg Impact
tested as per AWS D1.1.

As per AWS D1.1 Group No & Minimum Impact thickness is supplementary
essential variable.
So we have written a WPS based on that PQR
So as per that only group 1 material above 16mm can be weld when
impact test is required.

Now ma problem is, we have a job with 10mm thkness Grade A material(
Group I) impact requirement is 0 deg C.

Can we use the that PQR to write a WPS for this scenario....?
What Code says.....?

Or can we write a WPS for group II with thknss 10mm for impact
requirement at o deg C

Is the minimum impact thickness requirement is applicable for 0 deg C
when the pQR is tested at -40deg C.

Please advise.



To post to this group, send email to
To unsubscribe from this group, send email to
For more options, visit this group's bolg at
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

No comments:

Re: [MW:26652] ASME Tack welder Qualification

You are wrong. When Asme is applicable and wenn tack welds are to be removed no need for qualification  Sent from my Samsung Galaxy smartpho...