Abstract
In general, austenitic stainless steel (309 series) with high Cr and Ni contents is used as a filler metal for welding dissimilar mild steel and stainless steel. The reason is to prevent the reduction of Cr and Ni at the weld, and prevent the part from hardening further. However, this filler metal is expensive. In this study, the most common and inexpensive filler metal for mild steel was applied for welding dissimilar mild steel and austenitic stainless steel to a thin plate. We carried out hardness testing, tensile testing, and bend testing on the joint, and compared the results with those of the 309 series filler metal. The welding methods applied were gas metal arc welding, shielded metal arc welding, and gas tungsten arc welding. The results show no problem with practical application even if the filler metal for mild steel was applied.
https://ror.org/02f0psx94 
