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Chemical Composition C(%)Si(%)Mn(%)Cr(%)Cu(%)Mo(%)P(%)S(%)2.1-3.6=1.50.3-1.510.0-24.0=0.80=1.0=0.10=0.10Size 8*10-45*50mm Hardness SeriousSurfaceVolume HardnessStandard Hardness53-58HRC51-56HRCHigh Hardness58-65HRC56-63HRCImpact Value =3J/CM^2Balls Number =12000timesMicrostructure M+CDiameter and Length Tolerance(mm) 8*10-18*20mm20*25-30*35mm35*40-45*50mm=1=1.5=2mm Production Process  Iron---Add Alloyed Material---Furnace Heating---Pouring to the Model---Out of the Model---Finishing---Quenching---Cooling---Tempering---PackagingApplication Cement plants, Mines, Power stations, Chemical industr