Welding Carbon Steel To Stainless. Well it can happen when you heat the stainless steel material for too long and at a temperature of 800 1400 degrees Fahrenheit. When resistance welding is used the carbon steel is usually preheated since its more electrically conductive and doesnt heat up as fast as stainless steel.
The tank is 48X48X26 Non pressure constructed from 14 304 SS. There is an easy way to select the higher alloy filler which will dilute to give the correct austenitic microstructure with enough ferrite to avoid shrinkage cracks. Monitor the temperature of your base metal and weld metal as failure to do so may give rise to avoidable performance problems in the long run.
Please Take Note of this.
Welding of stainless steel to mild steel Carbon steel Low alloy steel Temperature upto 600 F 315 C The most common Electrode filler wire used to join stainless steel or duplex stainless steel to mild steel is E309L ER309L for normal temperature service. Look also at welding of stainless steel and other joining methods NIDI pub no 9002 there is a chap on dissimilar welding. Passive layer is prevented from reforming. You can absolutely weld plain carbon steel to stainless steel using TIG welding check out this intro article about what TIG welding is to learn more about why.