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| Item | Guarantee Value/保证值(%) | Typical Value/典型值(%) |
| Al2O3 | ≥99.2 | 99.52 |
| Fe2O3 | ≤0.1 | 0.04 |
| SiO2 | ≤0.1 | 0.03 |
| Na2O | ≤0.4 | 0.25 |
| MgO | ≤0.02 | 0.02 |
| CaO | ≤0.05 | 0.02 |
| K2O | ≤0.03 | 0.03 |
| Specific Weight/比重 | Hardness/硬度 | Bulk Density/堆积密度 | Melting Point/熔点 |
| 3.95 g/ cm3 | 9.0Mohs scale | 1.73-1.82g/cm3 | 2050℃ |
| Grit粒度 | Mesh#目数 | Mesh size(um)目数尺寸 | Weight Standard(%)重量占比 | Typical Value(%) 典型值 |
| Coarsest Grit最粗粒 | +10 | 2000 | 0 | 0 |
| Coarse Grit粗粒 | +14 | 1400 | Max. 20 | 10.2 |
| Basic Grit基本粒 | +16 | 1180 | Min. 45 | 49.3 |
| Mixed Grit混合粒 | +16 +18 | 1180 1000 | Min. 70 | 85.4 |
| Fine Grit细粒 | -20 | 850 | Max. 3 | 0.3 |




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