... chrome alloyed micro-ballsForged Grinding ballsA) Diameter: 10~140mm balls, Chrome casting Cylpebs:8*10,10*12,12*14,14*16,16*18,18*20 ... ,Si≤1.0, Mn≤1.5, Cr: 10~28, Mo ≤1.0, P≤0.10, S≤0.08.Low Cr balls: C ... : 1.0~2.2, Mo ≤1.0, P≤0.10, S≤0.10.Forged balls: C:0.53~0.74,Si:0 ...