Main chemical component: C:0.40~0.60 Si:0.30~0.90 Mn:0.80~1.80 Cr:3.00~5.00 W:0.50~0.90 Others:0.50~1.50 Hardness:46~51HRC Application: All kinds of hot rolling flat roll. Welding flux: SJ303 Nantong Ace welding produces all kinds of overlaying hardfacing flux cored welding wire for steel works, for electric factory, for mining machine, for mould, for valve, for sugar mill, for digger etc. we have the ability to develop new type of wires or copy the models. Hardfaing flux cored welding wire factory Welding wire factory Flux cored welding wire factory Hardfacing welding wire factory