Analysis of Welding Strength of Gas Metal Arc Welding (GMAW) SS400 Material Using Variations of Welding Wire and Electric Current with Bending Test Method

Abstract

Welding is the process of joining two metals into a joint using heat. This study aims to determine how much the value of the bending strength test on gas welding metal arc welding (GMAW) using ER70S-3 welding wire with electric current variations, namely 80A, 100A and 120A. The welding method used in this study is gas metal arc welding (GMAW), the material used is SS400 with a length of 150 mm, a width of 20 mm and a thickness of 10 mm. the type of compound used is V compound with 60° dryness according to AWS G1 standard. 1:2000. The test conducted is bending test with Three points Bending method. Bending test specimen based on ASTM E32-02 standardization. The lowest bending strength test value is at 80A with an average value of 17.3 kN and a bending voltage value of 1946.25 N/mm2. The average value of bending test strength at 100A current strength is 18.0 kN and bending voltage value is 2.025 N / mm2. for the strong current of 120 is the largest with an average value of 19.8 kN and bending stress value of 2227.5 N/mm2.