Welding is considered as one of the most commonly used fabrication methods in today’s industrial applications. TIG and MIG welding methods are modern welding methods in which inert and active gases are used to prevent the weld pool from atmospheric oxidation. Both these methods are arc welding methods in which electric spark is used to generate required thermal energy for fusing the parent metals. TIG uses argon and helium gases to protect the weld pool while MIG uses CO2gas. In TIG welding process, a non-consumable tungsten electrode is used while a consumable feed wire is used in MIG welding. In most common the industries uses the welding process for make the permanent joints between the materials .In this present study mainly focuses on the MIG and TIG welding process. In this paper, stainless steel of grades of SS202 & SS304 of dimensions (40×50×6) mm were welded by butt joint by Tungsten Inert Gas (TIG) and Metal Inert Gas (MIG) welding processes. Then various tests were conducted to the joints such as tensile strength, bending test, micro structural test, grain size test etc and finally results ,physical as well as mechanical properties were investigated.
