... and plastic mold2. 4Cr5MoSiV (GB), it is similar to H11 (ASTM), 1.2343(DIN), SKD62 (JIS)3. 3Cr2MoW8V (GB), it is similar to H21 (ASTM), 1 ... : Be used widely in making all kinds of knives and durable cold working molds5. 7Cr7Mo2V2Si (GB)Chemical ... 7.10, W ≤0.50,Mo 2.10, V 1.80Annealed Hardness: HB≤255Heat treatment temp: ... 7.10, W ≤0.50,Mo 2.10, V 1.80Annealed Hardness: HB≤255Heat treatment temp: ...