Grinding Steel Ball
High hardness
Light specific gravity
High toughness
Less broken
High performance of anti-fatigue
Strong ability of shocking hardened layer
High Quality; Factory Price
Customized Type/Size; Professional Team
Brief Description
Grinding Steel balls are the most commonly used grinding ball materials, usually ordinary chrome steel balls or alloy steel balls. Grinding steel balls have high strength and wear resistance and are suitable for most general ball mill grinding. Different hardness and specifications of grinding balls are available. It’s widely used in the field of cement and building materials, thermal powder, the grinding mill of the beneficiation, steel and chemical industry, aerated bricks and alumina industry.
1.The Sizes
| Diameter,mm |
30 |
40 |
50 |
60 |
70 |
80 |
90 |
100 |
110 |
120 |
125 |
150 |
| Tolerance,mm |
±2 |
+3，-2 |
+4，-3 |
+5，-4 |
| Roundness(%) |
≤2 |
≤3 |
≤4 |
≤5 |
2.Chemical composition
| Item |
C（%） |
Si（%） |
Mn（%） |
Cr（%） |
Cu（%） |
Mo（%） |
P（%） |
S（%） |
Ni(%) |
| RS-1 |
0.42-0.50 |
0.17-0.37 |
0.5-0.80 |
0-0.25 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-2 |
0.37-0.44 |
0.17-0.37 |
0.7-1.0 |
0-0.25 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-3 |
0.48-0.56 |
0.17-0.37 |
0.60-1.0 |
0-0.25 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-4 |
0.57-0.65 |
0.17-0.37 |
0.70-1.0 |
0-0.25 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-5 |
0.62-0.70 |
0.17-0.37 |
0.90-1.0 |
0-0.25 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-6 |
0.67-0.75 |
0.17-0.37 |
0.90-1.20 |
0-0.25 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-7 |
0.37-0.45 |
0.17-0.37 |
0.50-0.8 |
0.80-1.1 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-8 |
0.38-0.45 |
0.17-0.37 |
0.50-0.80 |
0.90-1.2 |
0-0.03 |
0.15-0.25 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-9 |
0.65-0.75 |
0.20-0.30 |
0.75-0.90 |
0.55-0.70 |
0-0.25 |
0-0.30 |
0-0.030 |
0-0.030 |
0-0.30 |
| RS-10 |
0.37-0.44 |
0.17-0.37 |
1.4-1.8 |
0-0.25 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.30 |
0-0.30 |
| RS-11 |
0.65-0.75 |
0.20-0.45 |
1.4-1.8 |
0-0.25 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.030 |
0-0.30 |
| RS-12 |
0.52-0.65 |
0.17-0.37 |
0.60-1.2 |
0-0.25 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-13 |
0.70-0.80 |
0.17-0.37 |
0.70-0.80 |
0.50-0.60 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-14 |
0.58-0.66 |
1.2-1.6 |
0.65-0.80 |
0.70-0.90 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-15 |
0.60-0.65 |
1.6-1.7 |
0.7-0.8 |
0.7-0.8 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-16 |
0.75-0.85 |
0.2-0.40 |
0.9-1.0 |
0.85-0.95 |
0-0.25 |
0.06-0.13 |
0-0.035 |
02-0.035 |
0.06-0.13 |
| RS-17 |
0.82-0.95 |
0.20-0.40 |
0.92-1.02 |
0.80-0.95 |
0-0.25 |
0.06-0.10 |
0-0.035 |
0-0.035 |
0.06-0.10 |
| RS-18 |
0.35-0.40 |
0.17-0.37 |
0.7-0.8 |
0.9-1.0 |
0-0.25 |
0-0.30 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-19 |
0.95-1.05 |
0.17-0.37 |
0.9-1.10 |
0.40-0.60 |
0-0.15 |
0-0.05 |
0-0.035 |
0-0.035 |
0-0.30 |
| RS-20 |
0.95-1.05 |
0.15-0.35 |
0.20-0.40 |
1.30-1.65 |
0-0.25 |
0-0.10 |
0-0.027 |
0-0.020 |
0-0.10 |
3.Technical specification
| Item |
Breakage rate |
Hardness |
Impact value |
Drop times |
Micro structure |
|
|
(HRC) |
(J/cm²） |
(times) |
|
| RS-1 |
<1% |
≥45 |
≥12 |
≥8000 |
M+C |
| RS-2 |
<1% |
≥50 |
≥12 |
≥10000 |
M+C |
| RS-3 |
<1% |
≥55 |
≥12 |
≥10000 |
M+C |
| RS-4 |
<1% |
≥55 |
≥12 |
≥12000 |
M+C |
| RS-5 |
<1% |
≥58 |
≥12 |
≥12000 |
M+C |
| RS-6 |
<1% |
≥60 |
≥12 |
≥12000 |
M+C |
| RS-7 |
<1% |
≥55 |
≥12 |
≥12000 |
M+C |
| RS-8 |
<1% |
≥55 |
≥12 |
≥12000 |
M+C |
| RS-9 |
<1% |
≥58 |
≥12 |
≥12000 |
M+C |
| RS-10 |
<1% |
≥55 |
≥12 |
≥12000 |
M+C |
| RS-11 |
<1% |
≥58 |
≥12 |
≥12000 |
M+C |
| RS-12 |
<1% |
≥55 |
≥12 |
≥12000 |
M+C |
| RS-13 |
<1% |
≥58 |
≥12 |
≥15000 |
M+C |
| RS-14 |
<1% |
≥60 |
≥12 |
≥15000 |
M+C |
| RS-15 |
<1% |
≥60 |
≥12 |
≥15000 |
M+C |
| RS-16 |
<1% |
≥60 |
≥12 |
≥15000 |
M+C |
| RS-17 |
<1% |
≥60 |
≥12 |
≥15000 |
M+C |
| RS-18 |
<1% |
≥60 |
≥12 |
≥15000 |
M+C |
| RS-19 |
<1% |
≥60 |
≥12 |
≥15000 |
M+C |
| RS-20 |
<1% |
≥60 |
≥12 |
≥15000 |
M+C |
