... Die Steel 1. Cr12Mo1v1/D2/1.2379/SKD11 2. high carbon, high chromium, molybdenum D2/1.2379 Die SteelHigh speed steelTool steel ... sheet Steel Grade: Cr12Mo1V1, D2, 1.2379, SKD11Chemical Composition(%)CSiMnCrVP/S≤WMo1.500.350.3512 ... tool, like: punching mould, cold squeezing mould and circular saw. D2/1.2379 Die Steel