... /M2/M35 according to standard of GB,ASTM,DIN,JIS, High Speed Tool Steels Bars Steel Grade Chemical composition in % by wt ... .50 —1.00—1.20W=17.5—18.5 Sizes: Cold Drawn Bars:Dia.1.5-18mm ; Hot Rolled Bars/coils ... to be discussed Application :Driller, Topper,Cut Tools, Punch, Bearing High Speed Tool Steel Bars