... S≤0.030, Cr 7.10, W ≤0.50,Mo 2.10, V 1.80Annealed Hardness: HB≤255Heat treatment temp: Hardening ... mold2. 4Cr5MoSiV1, it is similar to H13(ASTM), 1.2344(DIN), SKD61(JIS)Chemical Composition: C 0.39, Si 1. ... . W6Mo5Cr4V2 ,it is similar to M2( ASTM), S6-5-2(DIN), SKH51(JIS)Chemical Composition: C 0.85, Si 0.38 ... S≤0.030, Cr 4.05, W 8.90, Mo 2.90 V 1.45Annealed Hardness: HB≤255Heat treatment temp: Hardening ...