Analysis of Current on Mechanical Properties and Microstructure of A53 Gr B Material with Gas Tungsten Arc Welding Process

The welding use correct process parameters will produce joint with optimum in mechanical properties. current is a very important parameter welding. Gas Tungsten Arc Welding carbon steel A53 Gr B uses variations can be an option to get the best quality joints. purpose of this research properties and microstructure by varying current. experimental method GTAW A 53 using single V butt 5G position, Argon protective gas flow rate 15 liters per minute filler rod ER 70 S-6. This also 11-13 Volt voltage DCEN polarity 70, 90, 110A. Based on ASME Section IX, test results show that specimen 90A gives tensile strength 480 MPa hardness value 190 HV, whereas specimens 70A bring incomplete penetration defects weld area. provides better compared currents 110A