... high precision cold die And thermoset molding plastic mold.Features: 1. pure steel vacuum degassing refining treatment. 2. ball softening ... of cryogenic treatment has the risk of cracking the mold or workpiece nitriding nitriding, the surface layer has ... 1.2311,1.0503,1.0540,1.0535,1.1525,1.1545,1.2735,1.2764,1.4021,1.2361, 1.2316,1.4122,1.2327,1.2550,1.2782,1.2787 1.2379/1.2419/1.2108 TOOL DIE STEEL ...