... bar Forging.The usual grade are as below:Plastic Mould Steel: S55C, P20(1.2311), 1.2312(P20 ... +S), 718(1.2738/P20+Ni)Hot-working Mould Steel: H13(1.2344/SKD61), EFS H13(8407 ... ), 1.2714(SKT4/5CrNiMoV)Cold-working Mould Steel: D2(1.2379), SKD11(Cr12MoV), DC53(Cr8Mo2SiV ... 1.2085(3Cr17+S)Mirror Mould Steel: NAK80(HPM50/10Ni3MnCuAl), S136(4Cr13MoV), SUS420(4Cr13)New Mould Steel: Y4(4Cr3Mo2MnVNbB), HD ...