- impact at low temperature (e.g -45 degC) or requirements such sour service requirements (MR-0175), then it's advisable to check the electrode MTR's thoroughly so as to ensure that all design requirements are being met.
QW-404.12 A change in the filler metal classification within an SFA specification, or for a filler metal not covered by an SFA specification or a filler metal with a “G” suffixwithin an SFA specification, a change in the trade designation of the filler metal.
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Ahmad, Aftab
Sent: Tuesday, October 19, 2010 1:06 AM
To: materials-welding@googlegroups.com
Subject: [MW:7637] RE: 7635] Change in electrode manufacturer
Your question is interesting. As long as the code is concerned, electrodes brands are not essential parameter and it should not require re-qualification of WPS. But some times it happens that with one brand of electrodes some times WPS does not qualify and just by switching from one brand to another brand the same WPS qualifies. It shows that brands play a very important role in qualification of WPS that can be ignored despite the electrodes brands conform to the standard. I would ask forum for their expert opinion in significance of the electrode brands in qualification of the WPS.
Best Wishes
Aftab Ahmad
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of
Sent: Tuesday, October 19, 2010 9:16 AM
To: materials-welding@googlegroups.com
Subject: [MW:7635] Change in electrode manufacturer
Hi frnds,
Please clarify the below
we have qualified a welding procedure with ESAB E07018 and it is passed we are doing the production welding .
Now we have no stock of ESAB so we are using HONAVAR Electrodes with the same WPS.
Is it acceptable or we have to make another procedure with honavar electordes.
regards,
kk
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