... /M2/M35 according to standard of GB,ASTM,DIN,JIS, High Speed Tool Steels Bars Steel Grade Chemical composition in % by wt ... —1.35 0.45 0.40 0.030 0.030 3.80—4.50 3.20—3.90 3.00—3.50 Co=9.5—10.5 W = 9.0—10.0 S ... —2—5 1.3255T4 SKH 3 0.75—0.83 0.45 0.40 0.030 0.030 3.80—4.50 0.50—0.8O 1.40—1.70 ... to be discussed Application :Driller, Topper,Cut Tools, Punch, Bearing High Speed Tool Steel Bars