size:DIA 40-50mm(different DIA you can choose )

hardness:HRC 55-65( different HRC you can choose)

chemical elements: C:0.45-0.75  Si:0.45-0.75  Mm:0.7-1.25  P:<=0.030max  S:<=0.030   Cr:0.11-0.4  V:0.05-0.12

products' speciality:Hing hardness  no breakage  good wear resiscance  even wearing

applied field:Mine ,cement plants, power stations, chemical industries