Welding filler is an alloy or sometimes unalloyed metals that is used in TIG or argon welding that is selected based on the material of the welding sheets
Stainless steel welding filler
Copper welding filler
Aluminum welding filler
Mild steel welding filler
Copper Nickel Welding Filler Code ER-CuNi
Cast iron welding filler code ER-Ni1