Study on Welding Materials and Weldability of High-performance Fire and Weather Resistant WGJ510C2 Steel
WGJ510C2 steel is a self-developed high-performance fire and weather resistant construction steel in China,WGJ510C2 steel was used for gas shielded welding test research,including wire deposition performance,mechanical properties,high temperature strength,hardness and microstructure.The results show that room temperature and high temperature tensile properties can meet the welding requirements of WGJ510C2 steel.The Charpy impact energy at low temperature in weld metal,fusion line and heat affected zone have a considerable margin.Therefore,with gas shielded welding method and NHG-1 matching WGJ510C2 steel,the comprehensive properties of the welded joint can completely satisfy the welding requirements of the high building steel.