An industrially viable and commercially available material known for its toughness, magnetic properties, strength, thermal stability and other physical properties which can be made use of in large scale applications is Austenitic Stainless Steel (ASS). Among the top five grades of stainless steel, austenitic stainless steel has exceptional abilities of thermal stability at elevated temperatures and excellent corrosion resistance. Its strength cannot be surpassed at such conditions when compared to the other grades. However, this strength poses challenges to its use in welding. But austenitic stainless steel can withstand welding variations in standard conditions. It poses penetration challenges when suitable solid-state or fusion based welding methods are applied due to its incredible strength and toughness. However, austenitic stainless-steel responds with good compound effects with fusion welding, especially Gas Metal Arc Welding (GMAW). With the variation of temperature, pressure, shielding gas composition used in the weld, environment, and the properties are enhanced. However, mild or large deformations and disruptions in the surface also arise. Variations and the different technological advances at different conditions can also be seen. In this review, it is focused on the response of austenitic stainlesssteel variants of different grades to two types of fusion welding processes, which include GMAW and Laser Beam Welding (LBW). The microstructure, tensile strength, bead profile, penetration ability, detainments of corrosion resistance at high temperatures and the fixed durability of the weld at varying conditions are studied.

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