Detailed Product Description name:high&low chrome cast grinding ballsa)specification:8-130mmb)Hardness:High Cr:HRC 58-65Low Cr:HRC 45-52c)chemical compositionhigh Cr:C:2.0-3.2 Si:1.0max Mn:0.5-2.5 Cr:10-28 Mo:1.5max P:0.1max S:0.08maxlow Cr:C:2.2-3.5 Si:1.4max Mn:0.3-1.5 Cr:0.4-3.0 Mo:1.0max P:0.15max S:0.15maxd)Applied fields:metal mines,cement plant,power station,chemical industrye)packing:iron ...