1" grinding steel ball for mining Dia.:25-200mm Hardness:58- ... depends on the specific mine ore, the temperature, the ball mill and other conditions.) 8. Package: Woven bag: ... 0.02%, Cr: 0.31%.Cu: 0.08%, w: 0.009%, Mo: 0.002%, V: 0.002%, Ti: 0.002 ... %, Al: 0.012%, Als: 0.009%, B: 0.0004%, Nb: 0.002%,Ceq: 0.96% ... .107614014311.272814514812.524315015313.8651 1" grinding steel ball for mining