Classification Chemical Composition And Metallurgical Structure:
| Name | Material | C | Si | Cr | Mn | S | P | Mo | Al | Metallurgical Structure |
| DZ-9 | special high-CrⅢ | 2.2-3.0 | ≤1.0 | 15-17 | 0.5-2.0 | ≤0.06 | ≤0.08 | micro | micro | M+C |
| DZ-10 | high-Cr | 2.2-3.2 | ≤1.0 | 11-14 | 0.5-2.5 | ≤ 0.06 | ≤ 0.08 | micro | micro | M+C |
Mechanical Property:
| Name | Material | Impact Test (AK.J/cm2) | Endurance test times(5m) | Quenching Hardness (HRC) | Un quenching Hardness (HRC) | Breakage |
| DZ-9 | Special High-CrⅢ | ≥4 | ≥10000 | ≥60 | ≥49 | <1% |
| DZ-10 | high-Cr | ≥4 | ≥10000 | ≥58 | ≥49 | <1% |
Substance:
| Nominal Diameter (mm) | Diameter Tolerance (mm) | Approx Weight per Ball (kg) | Average Number per MT |
| 25 | +1,-0.5 | 0.033 | 30303 |
| 30 | +1,-0.5 | 0.064 | 15625 |
| 40 | +2.0,-1.0 | 0.11 | 9090 |
| 50 | +2.0,-1.0 | 0.261 | 3831 |
| 60 | +2.0,-1.0 | 0.510 | 1961 |
| 70 | +2.0,-1.0 | 0.883 | 1132 |
| 80 | +3.0,-1.5 | 1.402 | 713 |
| 90 | +3.0,-1.5 | 2.092 | 478 |
| 100 | +3.0,-1.5 | 2.98 | 335 |
| 110 | +3.0,-1.5 | 4.087 | 244 |
| 120 | +3.0,-1.5 | 5.44 | 183 |
| 130 | +3.0,-1.5 | 7.062 | 141 |