... -rolling, annealing, pre-hardeningCold-worked die, hot-worked die, plastic die, non-magnetic die steelFushunGrade Product CategorySteel GradeASTM,USA,ASTMJIS ... 4Cr5MoSiV1,7Mn15Cr2A13V2WMo,3Cr2Mo,3Cr2MnNiMo,etcD7, F1, S5, S7, D3, D2, A1, O2, O1, A8, L6, H21, H10, ... ,40Cr,etc GB3077high speed steelW6Mo5Cr4V, W18Cr4VM2 GB9943Carbon steel20, 35, 40, 50, 55, 60 ect GB699 W18Cr4V High speed steel Flat Bar