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Up Topic Welding Industry / Technical Discussions / Stanless to Mild Steel
- - By Skaggydog (**) Date 04-19-2011 18:01
Single pass fillet weld, Stainless Steel 304 to Mild Steel A500 gr. B.
Would 309 be the proper SMAW filler?  What about E7018?  Looking at D1.6 I don’t see this as prequalified, right?  Would a WPS for A36 to 304 suffice?  Can we test only a fillet weld for the PQR?
Parent - - By jwright650 (*****) Date 04-19-2011 18:06 Edited 04-19-2011 18:08
Take a look at E309L-15 or E309L-16. A Fillet only PQR can be run and then macro-etched to prove penetration at the root. Also do a break test to make sure the mechanicals are OK. I don't have D1.6 in front of me or I would quote the Clauses for you to look up.(sorry bout that)
Parent - - By Tommyjoking (****) Date 04-19-2011 22:43
just a side note....if you have to run out of position work you will be better off with the 309 L 15.   Just did a job not long ago and got the 16 by mistake....it was a bad mistake.
Parent - - By 803056 (*****) Date 04-20-2011 02:39
You will never pass a fillet break test in the horizontal position with anything other than a EXXX-15. Neither EXXX-16 or EXXX-17 will get fusion to the root. If you cannot get fusion to the root in the horizontal position, they are unlikely to get fusion to the root in the overhead position. As a matter of fact, I doubt it is a good idea to use either EXXX-16 or EXXX-17 in the overhead position considering the fluidity of the weld pool.

Best regards - Al
Parent - - By Skaggydog (**) Date 04-20-2011 19:23
Thanks for the speedy advice guys; I hope to tweek it just a bit.  The Foreman and welders want to run 5/32" so I ordered the 309L-16.  Will be running it horizontal as flat is not plausible.  Will let you know how it goes.

Thanks again
Skaggy
Parent - - By Milton Gravitt (***) Date 04-21-2011 01:14
Did you read the post above yours.

                          M.G.
Parent - - By Skaggydog (**) Date 04-21-2011 13:42
Yes, I did Milton.  I couldn't get the -15 in 5/32" and my welders say they ain't "frade of notin'". 
So, thats why I only bought 10 lbs. and will report back on how it goes.

Thanks.
Parent - - By jwright650 (*****) Date 04-21-2011 13:50
We got the -16 to work for our application....pen to the root was acceptable.
Parent - - By 803056 (*****) Date 04-21-2011 15:44
I'm going to have to pay you a visit John.

I've worked with four companies over the last couple of years that were welding stainless to stainless and stainless to carbon steel in the field. All the welds (except for one CJP groove weld in 1/2 inch plate) were fillets in the horizontal position. Not one welder could get fusion to the root using either the -16 or the -17 variety SMAW electrode. The fillet break test was a standard test where the saw cut edge of the butting member was positioned against the nonbutting member. No root opening or bevel along the edge of the butting member was permitted.

In each case, the welders had a fine line of slag at the root of the fillet weld when using either -16 or -17 SMAW electrode. We were successful using the -15, but it was a special order that we had to have shipped by express in order to meet the scheduled delivery date. Of course the fabricators waited until they were going to start production before bringing me in to qualify the procedures or the welders.

You are doing something that I would love to see. You have a technique that works and I would love to see it.

Best regards - Al
Parent - - By PA (*) Date 06-10-2011 19:40
Hello All,

Further to your discussions, We also have to weld AISI 1030 steel to SS304. We need to find out shop who can do this as we are not qualified for carbon steel to stainless steel welding.

I need to know what to check for before finalizing shop to do welding as we require. DO we need to go for any perticular testing or shop qualification is enough?

I aprreciate any help in the matter.

Thanks & Have a great weekend.

Regards,

PA
Parent - - By 803056 (*****) Date 06-10-2011 20:14
They will need to have qualified WPS as well as welders qualified to the WPS.

Al
Parent - - By PA (*) Date 07-06-2011 16:21
Thanks Al for your advise and information...We did that and everything is now good...

Regards...

PA
Parent - By 803056 (*****) Date 07-07-2011 01:15
That's what we like to hear.

Al
Parent - By js55 (*****) Date 07-07-2011 11:45
Al's invoice is in the mail.
Somebody has to pay for all that experience and knowledge. :grin:
Parent - By Milton Gravitt (***) Date 04-21-2011 16:16 Edited 04-21-2011 16:20
Now that's the smart thing to do. I like trying to do things like that because you learn something every time . Have fun
Skaggydog.
                      M.G.
Up Topic Welding Industry / Technical Discussions / Stanless to Mild Steel

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