P1-P7 or base metal A36-SS409 Pre-qualified joints AWS D1.6

Date 12-03-2014 01:44

We're having a project that requires welding of SS304 - A36 and SS409 - A36 base metals, could anyone advise if there are such pre-qualified joints for dissimilar base metal from AWS D1.6.

Will highly appreciate your kind advise please.

Thanks.

By jwright650 (*****)

Date 12-03-2014 12:07 Edited 12-03-2014 12:16

Hi Mark,
No, the A36/409 is not a prequalified combination in D1.6. I don't have my copy of D1.6 handy, but if I remember correctly I did a PQR for a A36/304 combination a few years back and it came out OK using E309-15 and E309-16. Very little difference in the mechanicals using either rod....your mileage may vary as I've heard others had difference experiences.

edit*
found a thread where there was some discussion about the -15 vs -16 rod
http://www.aws.org/cgi-bin/mwf/topic_show.pl?pid=193307;hl=Stainless

By Mark Anthony Nofuente (*)

Date 12-04-2014 00:40

Thanks jwright650.

I knew that this dissimilar base metal requires qualification test but checking out once again just to be sure.

I think electrode SFA 5.22 E309LT1-1 would suit.