R:65 C: 0.54% - 0.82% Si : 0.18 - 0.40% MN : 0.60% - 1.05% S : 0.04% - Max P : 0.035 % AS - 0.01 Mix of max share Mix of mass share R50 C: 0.54% - 0.82% Si : 0.18% - 0.40% MN : 0.60% - 1.05% S : 0.04% - Max P : 0.035 % AS - 0.01 Mix of max share Mix of mass share