... service 3,Hardness:HB<=255 cold work tool steels D2 1.23791.ISO Certificate, UT test 2.High quality product & ... StandardChemical CompositionCSiMnCrVPSMoCoDIN1.23791.50~1.600.10~0.400.15~0.4512.00~12.000.90~1.10≤0.030≤0 ... .0300.60~0.8-ASTMD21.40~1.600.10~0.600 ... plate dies and edge or cold shears.4. Corresponding materials: 1. 2379(DIN), D2(ASTM), SKD11(JIS),Cr12Mo1V1(GB), XW ...