welding stainless exhaust tubing

[Matt@RFR]

Yessir. And remember that once the tube fills with argon, it still needs flow. Around 5cfh is fine.

With stainless, Ti, Inconel, any of the Chrome Moly steels, aluminum...basically anything other than mild steel requires a back purge if the root will penetrate the backside of the joint.



Also, remember that argon is heavier than air, so fill the tube from the bottom up, and also try to seal the inlet as best you can. The far end of the tube only needs an 1/8" hole in it.