Cast Steel Balls

The field of applications for the Cast Chrome Alloy Grinding Steel Balls, in short Cast Steel Balls, can be found in Cement Plants, Mines, Power stations, Chemical Industries, Grinding Mill, Ball mill and Coal mill. We have available 4 maintypes of these balls: Low chrome, medium chrome, high chrome and higher chrome. Sizes are in the range 10mm – 130mm.

Main specifications for Cast Chrome Alloy Grinding Steel Balls

Parameters Low Chrome Medium Chrome High Chrome Higher Chrome
Cr % 0.8 – 3.5 4 – 9 10 – 18 22 – 25
C % 2.2 – 3.5 2 – 3.3 1.6 – 3.3 2.0 – 3.3
Si % 1.2 max 1.2 max 1.0 max 1.0 max
Mn % 1.5 max 1.8 max 2.5 max 2.5 max
Mo % 1.0 max 1.5 max 1.0 max 2.0 max
Cu % 0.5 max 1.0 max 1.5 max 1.5 max
P % 0.15 max 0.15 max 0.10 max 0.10 max
S % 0.15 max 0.15 max 0.10 max 0.10 max
Metallographic structure Carbide + Pearlite Carbide + Pearlite Carbide + Martensite Carbide + Martensite
Hardness (HRC) 45 or above 50 or above 58 or above 60 or above
Times of falling ball 8000 or above 12000 or above 15000 or above 22000 or above

Available ball diameters

Nominal Diameter in mm Weight in kg per ball in average Number of Balls per ton in average
10 0.135 74073
12 0.0181 55248
15 0.0242 41322
20 0.0322 31056
25 0.063 15873
30 0.11 9091
40 0.257 3891
50 0.5 2000
60 0.867 1153
70 1.37 729
80 2.05 487
90 2.90 345
100 4.00 250
110 5.30 188
120 6.80 147
125 7.75 129
130 8.74 114