... detailed material we could offer:1. 7Cr7Mo2V2Si (GB)Chemical Composition: C 0.74, Si 1.10, Mn 0.45, P≤0 ... , S≤0.020, Cr 5.10, W ≤0.30,Mo 1.35, V 0.90Annealed Hardness: HB≤235Heat treatment temp: Hardening 1020 ... M2( ASTM), S6-5-2(DIN), SKH51(JIS)Chemical Composition: C 0.85, Si 0.38, Mn 0.35, P≤0 ... kinds of knives and durable cold working molds4. W9Mo3Cr4VChemical Composition: C 0.83, Si 0.35, Mn 0.35, P≤0 ...