Originally Posted by apkano
Mig or Tig work ok...just point out some Mig or Tig welding on the body of a car...
Pretty much all car bodies are Resistance welded (spot welded). Spot welding Stainless steel is very tricky and usually has pretty dire results. The currents you have to use to get a satisfactory weld, (4* square root of the Governing metal thickness) are so high that the electric bill from 2 months of production would cost more than a years worth of adhesive.
Incidentally, I'm a weld consultant, mainly to the automotive industry.
Yes, there is virtually no TIG or Mig, if any, on a modern production car, with the exception of some of the suspension components, but I have seen it on older and low volume shells; my '80 124 spider has various panels attached by short runs of MIG, and the front footwells on my 911 has seam welded pressings for the corners. I was just commenting that it is not impossible to weld stainless, which is what you seemed to imply.
