Evaluation of Welding Parameters on Tensile Strength and Hardness of AISI 1018 Low Carbon Steel Plate Welded Joints

This work explores the optimum tensile strength and hardness of AISI 1018 low carbon steel plate welded joint using an E7018 electrode. The effect of metal metal arc welding process parameters namely; welding current and welding travel speed on AISI 1018 low carbon steel samples. The optimum performance of weld joints has been assessed based on the ultimate tensile strength and hardness of welded joints considering the welding current and travel speed variation. Taguchi-based L4 orthogonal array has been considered for the design of the experiment. The welding parameters on Tensile strength and Hardness of AISI 1018 low carbon steel plate welded joints were evaluated. The results show that there was no significant effect in current variation from 80A to 100A on the Ultimate Tensile strength and hardness of AISI 1018 low carbon steel plate with an average UTS and hardness of 434MPa and 122, respectively. However, it seemed that the welding travel speed of 20 to 21 mm/s, slightly affected the ultimate tensile strength and the hardness. Scholars Middle East Publishers