experienced welders. i have ?

[61falcon]

I have a 110 mig welder that I use for various projects. currently it has a roll of .030 carbon steel welding wire. I need to weld some stainless steel exhaust pipe on my daily driver F150. is there any reason not to use this wire on stainless exhaust pipe? and does the welding gas matter? its probably the only stainless I will be welding for a while and don't want to buy an entire tank of different welding gas for a muffler replacement.

 

[c4cruiser]

Good reading here at the Lincoln website Seels like you would only need the appropriate wire and use a low voltage setting.

 

[61falcon]

thanks, that not only answered my question but was explained a lot about welding.

 

[Maxwell]

You can weld stainless with carbon wire, your welds will rust though.. Max

 

[bdkw1]

You can buy small spools of SS wire fairly cheaply. Or, as stated above, you can just weld it with the wire you have and deal with the rust. If you are using "MIG mix" AKA C25 it will work for both wires. Strait CO2 leaves a kind of crappy finish on stainless.

 

[plow]

I think you need to run 100% Argon on SS.

 

[Punchwood]

To MIG weld stainless you would use 75 / 25. With TIG you would use 100% argon.

 

[plow]

Now I know.

 

[38Chevy454]

You can weld stainless with carbon wire, your welds will rust though.. Max

X2, for an exhaust I would just use what you have and not worry about some rusting. "Stainless" steel is still about 85-90% iron based, just like mild steel is about 98-99% iron. What makes stainless steel is the additional chromium added which is approx 10-15% for exhaust grades.