high quality cast iron balls
1 good and High Quality Control
2,Prompt Delivery
3,Competitive Prices
4,SAE, ISO9001:2008
Type and Chemical composition of cast iron balls
Name | C | Mn | Si | Cr | S | P | Mo | Al | Microstructure |
Speical Hi-Cr I | 2.0-2.8 | 0.5-2.0 | 1.0max | 22-32 | 0.06max | 0.08max | mico | mico | M+C |
Speical Hi-Cr II | 2.0-2.8 | 0.5-2.0 | 1.0max | 17-22 | 0.06max | 0.08max | mico | mico | M+C |
Speical Hi-Cr III | 2.2-3.0 | 0.5-2.0 | 1.0max | 15-17 | 0.06max | 0.08max | mico | mico | M+C |
High-Cr | 2.2-3.2 | 0.5-2.5 | 1.0max | 11-14 | 0.06max | 0.08max | mico | mico | M+C |
Medium-Cr | 2.1-3.2 | 0.5-1.5 | 1.2max | 5-10 | 0.06max | 0.08max | mico | mico | P+C |
Low-Cr | 2.2-3.5 | 0.5-1.5 | 1.2max | 1.5-3.0 | 0.06max | 0.08max | mico | mico | P+C |
Physical Property of cast iron balls
Name | Impact Test AK.J/cm2 | Endurance Test Times (5m) | Dia 25mm-60mm | Dia 70mm-100mm | ||
Surface | Core | Surface | Core | |||
Speical Hi-Cr I | ≥4 | ≥10000 | ≥60 | ≥49 | ≥60 | ≥48 |
Speical Hi-Cr II | ≥4 | ≥10000 | ≥60 | ≥49 | ≥60 | ≥48 |
Speical Hi-Cr III | ≥4 | ≥10000 | ≥60 | ≥49 | ≥58 | ≥48 |
High-Cr | ≥3 | ≥10000 | ≥58 | ≥49 | ≥56 | ≥48 |
Medium-Cr | ≥3 | ≥8000 |
| ≥48 |
| ≥48 |
Low-Cr | ≥3 | ≥8000 |
| ≥46 |
| ≥45 |
Weight and Microstructure of cast iron Balls
Nominal diameter | Diametrical Tolerance(mm) | Approx. weight per ball(g) | Average number per MT |
20mm | +1/-0.5 | 33 | 30303 |
25mm | +1/-0.5 | 64 | 15625 |
30mm | +2.0/-1.0 | 110 | 9090 |
40mm | +2.0/-1.0 | 261 | 3831 |
50mm | +2.0/-1.0 | 510 | 1961 |
60mm | +2.0/-1.0 | 883 | 1132 |
70mm | +3.0/-1.5 | 1402 | 713 |
80mm | +3.0/-1.5 | 2092 | 478 |
90mm | +3.0/-1.5 | 2980 | 335 |
100mm | +3.0/-1.5 | 4087 | 244 |
110mm | +3.0/-1.5 | 5440 | 183 |
120mm | +3.0/-1.5 | 7062 | 141 |