IM wondering if it possible to weld mild steel and stainless steel together? Im trying to weld fit up my exhaust but the downpipe is mild steel and the resonator is stainless steel.

BTW, does anyone know where to buy 3 inch mild steel resonator or 3 inch test pipe with 3 bolt universal flange.

 

Im thinking of buying this downpipe, http://cgi.ebay.com/ebaymotors...wItem and cut it up and just weld to my existing downpipe and bolt up to my thermal 3 inch exhaust?

 

Yes, they can be welded.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Goullish &raquo;</TD></TR><TR><TD CLASS="quote">Yes, they can be welded.</TD></TR></TABLE>

i think he was looking for a little more info than just a yes or no.

 

You can TIG mild to stainless steel; choice of filler depends on the alloy of the two materials to be welded. 309 is a common filler for this application.

edit: grammar handicapped

 

straight from Burns "Use 309 filler rod to weld 304 to mild steel"

I have a mild muffler and stainless tubing and all is fine.

on a side note, aluminum and steel parts of the new "MX-5" are friction welded, apparently mazda came up with some sort of new method which joins the two metals together. I don't know anything more about it, or if it is something that has been done before

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by m3dia_lab &raquo;</TD></TR><TR><TD CLASS="quote">

i think he was looking for a little more info than just a yes or no.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StolenTeg &raquo;</TD></TR><TR><TD CLASS="quote">IM wondering if it possible to weld mild steel and stainless steel together? </TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Goullish &raquo;</TD></TR><TR><TD CLASS="quote">Yes, they can be welded.</TD></TR></TABLE>

 

Any muffler shop should be able to weld this right?

 

yes; you can use any filler you want. If you use mild steel mig wire it will work but it will rust. IT will rust even if you use stainless filler as the carbon steel will contaminate the stainless.

basically yes you can weld mild to stainless; just like you can mild to mild; nothing is different.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StolenTeg &raquo;</TD></TR><TR><TD CLASS="quote">Any muffler shop should be able to weld this right?</TD></TR></TABLE>

Honestly, as far as Alabama goes, most muffler techs wouldn't even know the difference, they just point and shoot.

So, yes, it won't be a problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 743power &raquo;</TD></TR><TR><TD CLASS="quote">straight from Burns "Use 309 filler rod to weld 304 to mild steel"

I have a mild muffler and stainless tubing and all is fine.

on a side note, aluminum and steel parts of the new "MX-5" are friction welded, apparently mazda came up with some sort of new method which joins the two metals together. I don't know anything more about it, or if it is something that has been done before</TD></TR></TABLE>

I have seen friction welding before, but its normally reserved for tubular kind of structures. Pretty much they take two peices of whatever, it doesn't really matter, machine the sepearate peices with a male and female end (though i am not sure of what the tolerances are, put them together in a lathe type apparatus, and spin them against one another. BAM! friction welding. I do not know what mazda is doing with it, maybe it is worth looking up.

 

actually ive the way ive seen magnesium welded together is a spining bowl type thing, its like a CNC 6 axis mill or something, but has a giant hydralic arm that moves the bowl, spins and applys loads of pressure to both pieces, and the spining/heat makes them one or something.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xerox445 &raquo;</TD></TR><TR><TD CLASS="quote">actually ive the way ive seen magnesium welded together is a spining bowl type thing, its like a CNC 6 axis mill or something, but has a giant hydralic arm that moves the bowl, spins and applys loads of pressure to both pieces, and the spining/heat makes them one or something.</TD></TR></TABLE>

That's friction stir welding.