Guy King wrote:
What happens if you weld stainless steel (specifically type 304) to mild
steel? In my case, it'd be with a MIG welder using ordinary mild steel
wire.

It welds ok. Stainless is a bit of a git to weld because of its lower
thermal conductivity - you end up overheating and melting away the
workpiece if you're not careful. But as far as "can I weld it to mild
steel with mild steel wire", yes you can.


--
Grunff