The Ultimate Tensile Strength of A 304l Austenite Stainless Steel Subjected To Tungsten Inert Arc Welding Using 308 Filler Metal.

Abstract

The aim of this research is to study the ultimate tensile strength (UTS) of 304L austenite stainless steel (ASS) which was subjected to tungsten inert arc (TIG) welding with 308filler. ASS sheets of 304L measuring 60mm x 30mm x 5mm were welded to produce V groove butt weld joints with a roof face of 1mm inclined at 30o and the land face of 2mm. The UTS welded joints were evaluated using tensile testing machine: Monsanto Tensiometer of type W based on the experimental data obtained from the tensile tests performed at an interval of 10amperes from 50amperes-90amperes. The result shows that as current increases, UTS decreases and decrease in UTS leads to the failure of the materials. The better specimen is the specimen A with the highest UTS (1804.7MPa) and lowest welding current (50A).