Stainless to mild steel question

[Srubrn]

I want to weld some SS sch. 40 pipe to some 2" 14ga. mild steel sqaure tubing. I have a MM210. What wire should I use and will I have to change the way I weld? Will the bead run the same as mild steel?
I guesswhat I am asking what is the difference?

I hope somebody tells me nothing sifferent just use ss wire.

[Memfuzz]

I asked this very question about two months ago, you can get the answers in a search of my posts. 309L wire was suggested, and using a "buttering" pass. I take that to mean lay a bead on the mild without touching the stainless, then lay a second bead that connects the first bead to the stainless material. I haven't used the info yet, so I can't tell you much more. I had trouble finding the wire in Memphis. " America's Distribution Center ", yeah right! I ordered it from Cyberweld.
One thing about this board, you'll get the answer from the pros, like Rocky D, Dan, and Mike Sherman. I used to think it was fun welding, but now it's fun to see the neat tools and projects and get some more ideas!

[Srubrn]

How about this question? Would welding SS to SS differ than regular welding with the exception of the wire and gas? I mean the technique and will the weld look the same.

Dan,

How about e-mailing me and giving me your number. I would like to talk to you about this very thing.

[email protected]

[Stu Bass]

Re: Stainless to mild steel question

Originally posted by Srubrn
I want to weld some SS sch. 40 pipe to some 2" 14ga. mild steel sqaure tubing. I have a MM210. What wire should I use and will I have to change the way I weld? Will the bead run the same as mild steel?
I guesswhat I am asking what is the difference?

I hope somebody tells me nothing sifferent just use ss wire.

Sruburn: I've welded alot of transition pieces(mild steel to stain.) Never had to butter anything although just with tig and stick, with 309. Haven't done it with mig. I would like to know also if there is a procedure especially for mig. Stu