Hi Venkat,
You may weld SS310 , with EMiCrMo-3 electrodes. Although overmatching with respect to chemical analysis and mechanical properties, this electrode will not cause any problem. However making use of the existing PQR on UNS 31254 material to weld SS 310 would not be possible under the following circumstances:-
- if there is any supplemental essential variable (e.g notch toughness), due to the fact that UNS 31254 is P8 Gr 4 material and SS 310 is P8Gr2 material. Group no is a supplemental essential variable, a new PQR is required under such conditions.
If the service application is for offshore or other corrosive environments, then a new PQR shall be established using matching electrode, e.g E/ER-310 to match the weld corrosion resistance as the base metal or as required by technical specifications.
Thanks.
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist & Consultant
Ontario,Canada.
Email-pgoswami@sympatico.ca,
pgoswami@quickclic.net
-----Original Message-----
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of N VENKATESWARA PRASAD
Sent: Monday, January 02, 2012 10:36 AM
To: materials-welding
Subject: [MW:13384] Welding SS 310S With E NiCrMo3
Dear All,
Can we use E NiCrMo3 for welding of SS 310. What are the pros and cons.
We have PQR for ASTM E312 S31254 material welded with ENiCrMo3. Can we use this PQR for the support of above welding procedure as per ASME Sec. IX.
Regards
VENKAT
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
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:
Post a Comment