No problem with the mig Dick. Unimix(75% argon / 25% carbon dioxide) and mild
steel wire(ER70S). I do it all the time, have been told by some welders it
shouldn't be done, been told it can't be done, have had one guy look at the
weld and after i gave him a hammer to beat the shit out of it to tell me what
he thinks... he called me a liar saying that's not what I welded it with. I
have also been told it's fine to do by other welders. I do stainless exhaust
repairs on harley dressers that get beat on by doing wheelies and regulary
weld stainless to mild steel brackets and such this way. Clean is the game
and it works fine.
My biggest question is, if it's got rust on it.. what makes you think it's
stainless? Might be a low content, which a magnet will tell you and I guess
it could take on light surface rust?.. but either way, if it's a non critical
item... i wouldn't hesitate. I think you'll be suprised at the outcome.
TD
> Yeah, I know, the proper way to weld stanless steel is probably with
> a heliarc or tig with some rare gas found only in outer space and
> expenxive rod that rivals diamonds in per pound value - - but - - !
> I'm laying out a core support for my new radiator, and in my junk
> pile I come across the perfect piece to use. I'm pretty sure it is
> stainless. It was originally part of a store display shelf for
> clothing. It was covered with surface rust, but a minute on the
> wire brush brought it back smooth and shiny.
>
> The Question. In a non-stress environment like a radiator core
> support, can I weld that stainless using my regular Mig with
> CO2/Argon that I have, with my regular mild steel wire. If not, can
> I gas weld it with mild steel rod. How about brazing with flux
> coated brass rod? Can I weld or braze it to mild steel (mounting
> tabs)?
>
> Thanks
> Dick J
> In East Texas
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