Chemical Composition C(%)Si(%)Mn(%)Cr(%)Cu(%)Mo(%)P(%)S(%)0.70-0.800.17-0.370.70-0.800.50-0.60≤0.25≤0.3≤0.035≤0.035Size 20*30-50*60mm Hardness SeriousSurfaceVolume HardnessStandard Hardness56-60HRC54-58HRCHigh Hardness60-64HRC58-62HRCImpact Value ≥18J/CM^2Balls Number ≥18000timesMicrostructure M+C Production Process Manual put material into storage rack→automatic continued feeding device→stokehole pinch roll feeding device→furnace heating→pinch roll discharging speediness discharging→enter into rolling ball machine→rolling ball quenching system→steel cylpebs sweltering self tempering device→finished product steel cylpebsApplication Cement plants, Mines, Power stations, Chemical industries, Other ball millsPackage Bags(one bag=one ton); Drums(one drum=800-1000kgs)