... temperatures, high hot wear resistance, good toughness mould steel 1.2344:we are professional manufacturer of alloy steel,we ... die steelThe similar grades of foreign countriesChina 4Cr5MoSiV1America H13Japan SKD61GermanX40CrMoV51(1.2344)BohlerW302Chemical component (%)StandardCMnSiCrPSMoVGB/T1299-20000.32-0.450 ... .75/5.50<=0.030<=0.0301.30/1.750.80/1.20Specialty Harden and air cooling steel, 600`C ...