... ,70,75,80,85,90,95,100 STEEL GRADE:PLASTIC DIE STEEL,COLD WORK DIE STEEL AND SON ON PRODUCT NATURE:1. RESISTS ... CARBIDE REACHESCHINESE GB 9942-88.MAIN USAGE:THE STEEL IS MAINLY USED FOR MAKING VARIOUS MACHINETOOLS WITH HIGH CUTTING SPEEDS,HEAVY LOADS ... , DRILLS, TAPS,ETC, IT IS ALSO USED FOR MAKING COLD OR HOT WORKDIES WITH HIGH WEAR RESISTANCE. 9CrSi,Cr12MoV Die Steel/Mold steel/tool steel