tool steel products 2.2mm-160mm,HSS steel,cold drawing ,rolled ,black surface & bright finished surface treatment tool steel products 2.2mm-160mm,HSS steel,cold drawing ,rolled ,black surface & bright finished surface treatment Typical product explanationHigh speed steelW6Mo5Cr4V2Similar to other Foreign GradeGBASTMDINJISW6Mo5Cr4V2M21.3343SKH-9Chemical composition%StandardCMnCrWMoVSPGB9943-880.8/ ...