... :0.7-1.25,P:0.030MAX,S:0.030MAX,CR:0.11-0.4,V:0.05-0.12 E ... :0.7-0.8,P:0.035MAX,S:0.035MAX,CR:0.28-0.60 D.PACKAGES OF GRINDING STEEL BALL ... :0.6-0.12,P:0.035MAX,S:0.035MAX,CR:0.04 B TYPESIZE:60-90MM,3-6MHARDNESS:45-55CHEMICALELEMENTS ... :0.7-0.8,P:0.035MAX,S:0.035MAX,CR:0.28-0.605.ALLOYED CASTING IRON BALLSHIGH/LOW CHROME ...