... .80% export business WE ARE THE PROFESSIONAL alloy steel bar MANUFACTURER,.SpecificationsAISI H13 Tool Steel: moulds with high polishing and long life time ... in deep die of hot extrusion die. 3.H13 alloy steel bar is used for making high precision,hot squeezing mold 4 ... -1.200.50-1.100.0300.0300.75Co0.60 alloy steel bar 5140,40Cr,42Crmo4,4140,1.7225,d2,d3,d5,O1,H13