Chemical Composition C(%)Si(%)Mn(%)Cr(%)Cu(%)Mo(%)P(%)S(%)2.0-3.3≤1.20.3-1.510.0-24.0≤1.2≤3.0≤0.10≤0.10Size 17-150mm(0.7inch-6inch) Hardness SeriousSurfaceVolume HardnessStandard Hardness54-58HRC52-56HRCHigh Hardness58-63HRC56-61HRCImpact Value ≥3J/CM^2Balls Number ≥12000timesMicrostructure M+CDiameter Tolerance(mm) 20-25mm30-60mm70-90mm100-140mm150mm±1±1.5+2,-1+2.5,-1+3,-1 Theoretical Ball Weight DiameterWeightDiameterWeight20mm32.8g90mm2988.9g25mm64.0625g100mm4100g30mm110.7g110mm5457.1g40mm262.4g120mm7084.8g50mm512.5g125mm8007.8125g60mm885.6g130mm9007.7g70mm1406.3g140mm11250.4g80mm2099.2g150mm13837.5gApplication Cement plants, Mines, Power stations, Chemical industries, Other ball millsPackage Bags(one bag=one ton); Drums(one drum=800-1000kgs)