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Mining alloy ball period of chemical composition
| name | Chemical composition | |||||||||||||
| C | Si | Mn | Cr | Mo | Cu | Ni | Nb | Ti | Zr | V | B | P | S | |
| Mining alloy ball | 1.8-3.2 | 0.5-1.5 | 0.4-1.5 | 3.0-5 | ≤0.5 | ≤0.8 | ≤0.5 | ≤0.2 | ≤0.5 | ≤0.5 | - | ≤0.1 | ≤0.15 | ≤0.15 |
Mechanical properties and microstructure
| hardness | impact value | metallographic structure | Falling ball impact fatigue life (number) | |
| name | （HRC） | AK（j/cm） | ||
| Mining alloy ball | ≥48 | ≥2.0 | P+C | ≥9000 |
| ≥9000 |
Product specification
| ball diameter | Each weight | Number per ton (only) |
| 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 | 2.9 | 345 |
| 100 | 4 | 250 |
| 110 | 5.3 | 188 |
| 120 | 6.08 | 147 |
| 125 | 7.75 | 129 |
| 130 | 8.74 | 114 |
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