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can you weld aluminum pipe to a stainless steel pipe?

9K views 16 replies 11 participants last post by  Joe Bob Biggs 
#1 ·
i have a stainless steel muffler and i need to weld a down tip onto it. i have a regular wire feed welder. im using wire for aluminum right now w/ argon. do i need to buy a specia kind of wire to weld aluminum and stainless steel together?
 
#7 ·
TXjeepTJ said:
i have a stainless steel muffler and i need to weld a down tip onto it. i have a regular wire feed welder. im using wire for aluminum right now w/ argon. do i need to buy a specia kind of wire to weld aluminum and stainless steel together?
What part of your exhaust system is aluminum? Aluminum and hot exhaust gases won't mix too well. They do make steel pipe that is aluminized for rust prevention. But it still welds like steel. Just put some steel flux core wire in and weld it.
 
#16 ·
It is like wearing white after labor day...

The only person I know of that could weld Aluminium to SS died 2000+ years ago. I was a tricky weld for even him...

since you already answered your own question...
 
#17 ·
but just for the record ..... aluminum is a heat sink ..... it actually takes more heat to weld Alum than it does to weld steel or stainless steel ..... I know this because I am a weld/custom fabricator by day (and a porn star by night:laugh:)
 
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