Welding Stainless To Mild Steel Exhaust
They make a 309 wire this is for welding carbon steel to stainless steel only.
Welding stainless to mild steel exhaust. I would get some 3 32 and some 1 16 wire i don t know the material thickness or if their is a gap but these two sizes should cover it. Is it ok to weld stainless steel exhaust tubing with carbon steel mig wire. These include the mechanical properties chemistry and ability to resist corrosion as taking the right decision can prevent any trouble that might creep in overtime. Either way to get the best service and longest life out of a.
309l is ideal to join your stainless steel to mild steel because this welding wire is made to weld both metals. Its definitely not a good idea. Since its just a crack on a car exhaust i think 308 or 316 would be fine to use but it s up to you. Stainless exhaust is sometimes made from 304 stainless but there are also quite a few exhaust components that use 400 series stainless like 409.
Focus on the properties of the metals you intend to weld. If you re welding mild steel it s more comfortable to manage as you d use a lower wire feed speed. Your wire feed speed also plays a huge role in welding stainless steel with normal mig wire. You can perform welding on stainless steel mild steel titanium aluminum exhaust pipes.
All the way up to series 309 stainless steel. By using tig welder you can use the right heat to weld the exhaust pipe and get the best welding result. So the quick bottom line is that you can weld together with either mild steel filler wire or stainless wire. The welds will rust more if mild steel but strength wise no concerns.
Firstly before you weld stainless steel to mild steel you need to consider the properties both metals have. 316 stainless is approx the same basic chemistry as plain steel except the 300 series stainles has additional 18 cr and 8 ni which is what makes it stainless. Tig welding is ideal for doing weld exhaust pipe properly.