Chemical Composition C(%)Si(%)Mn(%)Cr(%)Cu(%)Mo(%)P(%)S(%)2.1-3.6≤1.50.3-1.54.0-6.0≤0.80≤1.0≤0.10≤0.10Size 17-130mm(0.7inch-5inch) Hardness SeriousSurfaceVolume HardnessStandard Hardness48-53HRC46-51HRCImpact Value
Medium Chrome Grinding Ball Casting Ball