How To Weld Stainless Steel To Cast Iron. Masses agree to preheat as a better choice while few. Steels with over 020 C often require a post weld heat treatment to soften and toughen the weld.
33 AUSTENITIC STAINLESS STEEL The austenitic stainless steels contain 16-26 Cr 8-24 Ni Mn up to 040 C and small amounts of a few other elements such as Mo Ti Nb Cb and Ta. Steels with over 020 C often require a post weld heat treatment to soften and toughen the weld. MIG welder is highly possible for welding cast iron.
You can heat the casting anywhere in the range of 500-1200 degrees before welding dont go beyond 1200 degrees Fahrenheit.
Can you weld a cast iron with a stainless rod. Preheating or cold weld. The best choice for MIG wire is specialty nickel wire but the most costly option is to use stainless steel MIG wire. Newbies and intermediate welders need both workpieces heated while pros can manage a quality weld without any heat treatment.