Combination of welding

Date 11-21-2001 21:00

D.1.1 section 4 doesn’t consider Combination of welding procedure contrary to ASME SEC. IX. Why?

QW-200.4 in ASME SEC. IX, is only about Combination of welding procedures. In accordance with QW-404.4, Filler metal F-Number, E6010 & E7018 have different F-Numbers; and according to QW-253 F-Number is an essential variable. Sometimes we use combination of E6010 & E7018 electrodes. Must we use QW-200.4 for this case?

By Kamaruzaman (*)

Date 11-24-2001 04:10

[deleted]

By George-kh (**)

Date 11-25-2001 22:05

Dear Kamaruzaman
Thanks for your reply.
I didn’t ask this question for my project. I’m studding D1.1 and ASME Sec. IX

By miguel P (*)

Date 11-26-2001 23:32

AWS D1.1 consider several PQRs for a particular WPS. so you can qualify with 7018 and you qualify 6010 Too. because the essential variable says that you must qualify a new procedure when the resistence of the filler metal is increased. The 7018 is a low hydrogen electrode that require be carefull.