High Speed Tool Steel Bars Hss T1/M2/M35 according to standard of GB,ASTM,DIN,JIS, HIGH SPEED TOOL STEELGRADESCHEMICAL COMPOSTIONS%GBAISIJISDINCMnP≤S≤SiCrVWMoCoOTHERW18Cr4VT1SKH2S18-0-10.70~0.80.10~0.40.030.030.20~0.43.80 ~4.41.00~1.417.50~19≤0.30 Cu≤0.25;Ni≤0.30W18Cr4VCo5T4SKH3S18-1-2-50.70~0.80.10~0.40.030.030.20~0.403.75~4.50.80~1.217.50~190.40~14.25~5.75 W18Cr4V2Co8T5SKH4AS18-1-2-100.75~0.850 ...