Analysis of the Toughness of the Vertical Position GMAW Welding on Steel ST 42 with Electrode Spiral Movement Pattern

Abstract

This study aims to determine the toughness value of vertical position GMAW welding on ST 42 steel with a spiral electrode motion pattern. This study consisted of ST 42 steel, cut to the standard ASTM E23 specimen as many as 20 samples. The toughness value of the GMAW welding results in a vertical position, describes the strength and toughness of the material in making ST 42 steel joints. The results of the ST 42 steel impact test with spiral; the average value of impact toughness was 135.375 Joule with an impact value of 0.2461 (J/mm²), while without treatment the average impact toughness was 183.975 Joule with an impact value of 0.3345 (J/mm²). Thus, it can be concluded that the impact toughness of ST 42 steel with a spiral electrode movement pattern is smaller than the impact toughness without welding joint treatment means that the toughness of ST 42 steel without a connection is stronger than using a welded joint with a spiral electrode motion pattern.