... : C 0.74, Si 1.10, Mn 0.45, P≤0.030, S≤0.030, Cr 7.10, W ≤0.50,Mo 2 ... .10, V 1.80Annealed Hardness: HB≤255Heat treatment temp ... 0.30, P≤0.028, S≤0.020, Cr 5.10, W ≤0.30,Mo 1.35, V 0.90Annealed Hardness: HB ... 0.35, P≤0.030, S≤0.030, Cr 4.10, W 6.00, Mo 4.80 V 1.85Annealed Hardness: HB ... .35, P≤0.030, S≤0.030, Cr 4.05, W 8.90, Mo 2.90 V 1.45Annealed Hardness: HB ...