Comparative Study of Mechanical Properties of TIG Welded Joints of Similar and Dissimilar Grades of Stainless Steel Material

Abstract

This paper discuss and experimentally analyse the mechanical properties of TIG welded joints of similar and dissimilar grades of stainless steel and to find out the best joint. In this study. Different combinations from samples of AISI 304 and AISI 316 are welded under standard conditions by using Tungsten Inert Gas welding (TIG Welding) technique,.. The welded joints were tested for Tensile strength, Hardness and toughness and best combination is pointed out. The three combinations analysed were AISI 304-304, AISI 316-316 and AISI 304-316. It was found that the tensile strength and toughness of AISI 304-304 combination was highest and maximum hardness is observed in AISI 304-316 combination. The results indicate that there is not a single combination which excels in all tests.