... 030, S≤0.030, Cr 7.10, W ≤0.50,Mo 2.10, V 1.80Annealed Hardness: HB≤255Heat ... 75, P≤0.030, S≤0.030, Cr 5.10, Mo 1.10, V 0.30Annealed Hardness: HB≤235Heat treatment ... .93, Si 0.40, Mn 1.20, P≤0.030, S≤0. 030, Cr 0.50, W 0.50,Mo ... 1.2419(DIN)), SKS31(JIS)Chemical Composition: C 0.98, Si 0.40, Mn 1.00, P≤0.030, S≤0. 030, Cr 1 ... .00, W 1.40,Annealed Hardness: HB≤255Heat ...