Welding Exhaust Flux Core. A flux core mig will work just fine for exhaust. Depending on the thickness of the tube turn the heat down and wire speed up a little.
Welding stainless steel with mild steel flux core wire will give you a weld that rusts. Ad Find China Manufacturers Of Welding Rod. Welding over slag can make the welds look really nasty and fuse like crap.
The reason behind naming it a flux-cored welding is that a wire made of flux is used to weld by this process and this is what covers the whole weld.
It is really forgiving and simple way to bond metals and also a budget-friendly way to start off as a new welder or fix a thing or two around the house yourself. Wear welding goggles all the time when flux core welding to. Flux Core Welding often abbreviated as FCAW involves the use of a welding wire that is similar in many ways to Metal Inert Gas MIG welding except for the fact it includes a flux-cored compound within the wire that has the capability to remove the need for shielding gas. To melt your stainless steel and your mild steel flux core welding wire.