Investigation on MAG Welding Wires for Building Structure

Abstract

The objective of this investigation was to research the effects of type of MAG welding wire, heat input, and interpass temperature on the mechanical properties of weld metals, intending to use for the column-to-beam joints. The most suitable type of wire for the joints was a 540N/mm2-class wire featuring higher strength and toughness when compared with conventional 490N/mm2-class wires. Proper ranges of heat input and interpass temperature for 400N/mm²- and 490N/mm²-class steels were also found.