... .Chemical elements:C: 0.5-0.6, S: 0.04MAX, Mn: 0.6-1.0, P: 0.04MAX, Si: 0.2-0.4, Cr: 0.25MAX.Speciality:High hardness ... .Chemical elements:C: 0.72-0.92, S: 0.04MAX, Mn: 0.7-0.9, P: 0.04MAX, Si: 0.17-0.37, Cr: 0.4-0.6.Speciality:High hardness ...