... ,carbon steel ball,chrome steel ball1. chrom steel ball Chemical Composition C%Si%Mn%Cr%Cu%S%P%Hardemess0.90~1 ... system(ex.ball screw),metal milling,ink and paint grinding,chemical industry,food indystry,power plant. Density :7.833g/cm3 ... High precision, good surface, hardened and tempered with perfect hardness;Chemical and military related applications, also with excellent surface finish, considerable ...