... extrusive mold and tensile mold. 2. 4Cr5MoSiV1,it is similar to H13(ASTM), 1.2344(DIN),SKD61(JIS)Chemical Composition ... extrusive mold and plastic mold 3.4Cr5MoSiV(GB), it is similar to H11(ASTM), 1.2343(DIN),SKD62(JIS) 4 ... .3Cr2MoW8V(GB), it is similar to H21(ASTM), 1.2581(DIN),SKD5(JIS) 5. ... W6Mo5Cr4V2,it is similar to M2(ASTM), S6-5-2(DIN),SKH51(JIS) ...