I need to weld up some exhaust pieces. I'll be welding aluminized steel and hopefully aluminized to t409 stainless. I have a miller mig welder. Do you think I will get satisfactory results with er70s6 wire, or should I look for a different wire? Any other suggestions? Thanks

http://www.pirate4x4.com/forum/showthread.php?t=613141
helll I didn't even have to search..... just go to the right section.... search and you'll find LOTS more

I always weld it with regular mig wire for steel with no issues. We used to weld stainless to regular steel for the water treatment stuff we used to build. The legs and ground supports would be steel and the tank and components subject to the chemicals would be SS. I believe we welded SS to steel with regular steel wire since the steel would contaminate the SS so there was no point in using SS wire..........

Confused yet? :D

Thanks ROXROES.

gottagofast,

Maybe I'm missing it, but I do not see anything specifice to welding automotive exhaust in the shop and tools section. I tried searching there for exhaust and I have also tried searching the forum for exhaust welding. Any other advice you can offer?

it's exhaust..

yea, use what you have. You can use stainless wire so it won't rust but I wouldn't bother..

You can always clean off the aluminization.

Just search for manufacturer property sheets for whatever alloy you're using.

Welding
AK Steel 409 stainless is readily welded by arc welding processes. When gauge thickness and weld joint geometry permit the use of gas shielded metal-arc welding, joints having good properties are easily obtained. The electrode wires most often suggested are AWS ER309 or ER308L austenitic stainless steel when the application does not include exposure to high temperatures. AWS ER309 or ER308L stainless wire may also be employed for joining these stainless steels to mild steel. Thin wall components for elevated-temperature service should be weld fabricated with a matching weld filler such as 409 Cb. AWS ER430 and W18 Cr-Cb filler wires are suitablealternatives.

Guidelines for the Shielded Metal-Arc (SMA) process and selection of electrodes are about the same as those employed for GMA and GTA welding, except that matching fillers for thermal application are not available in covered electrode form. Suitable substitutes are E410NiMo and E330. AK Steel 409 stainless also is readily adaptable to resistance spot and seam welding.
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