... HSS 2.Bars, rounds, squares. High speed tool steel(M2,M35,T1,D2,D3,A2,F1)Die ... steelTool materialOur Tool Steels include: High Speed Steel Similar steel gradeChinaUSAGermanyJapanW6Mo5Cr4V2 ... at a much higher rate than carbon tool steel and continues to cut and retain its hardness even ... when the point of the tool is heated to a low red temperature. Tungsten is the ...