Welding Carbon Steel On Stainless. If the weld must be done vertical or out of position I would recommend you use a E309T1 which is a gas shielded flux core wire. Welding the bracing to the sides is where we are haveing trouble.
Nickel alloys are sometimes used for welding stainless to carbon because nickel alloys wont become hard and brittle no matter the carbon content of the steel. Welding carbon steel to stainless steel is a common process in the creation of a number of goods. The base metal can become hard but the weld metal wont.
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.
Carbon steel must not be welded directly to austenitic stainless steels as the solidified weld metal will form martensite which has low ductility and which as it contracts is likely to crack. 309 is usually the filler metal chosen for welding stainless to carbon steel when the composition of both are known. However MIG welding is recommended due to the different melting temperatures of the different steels because it uses a filler material to connect the different steels. Stainless Steel Welding Characteristics By definition stainless steels are iron-base alloys containing 10 or more chromium which imparts to the metal the corrosion-resistant properties for which stainless steels are so highly regarded.