... wear-Resistance 3) No breaking4)No mal-roundnessD). Applied fields:1) Metal Mines2) Cement plants3) Water coal slurry3) Power stations4) ... balls: C:2.0~3.2,Si≤1.0, Mn≤1.5, Cr: 10~28, Mo ≤1.0, P≤0.10, S≤0.08 ... balls: C:2.0~3.0,Si≤1.2,Mn≤1.5, Cr: 1.0~2.2, Mo ≤1.0, P≤0.10, S≤0 ... .10.Forged balls: C:0.53~0.74,Si:0.15~0.37, Mn:0 ... .45~1.2,S:0.04max. P:0.04Max.Cr :0 ...