| Name | A mortar | |
| Chemical composition | Al2O3 | ≥99 |
| R2O | ≤0.2 | |
| Fe2O3 | ≤0.1 | |
| SiO2 | ≤0.2 | |
| Bulk Density（g/cm2） | ≥3.80 | |
| Porosity（%） | ＜1 | |
| Bending strength（Mpa） | ＞350 | |
| Compressive strength（Mpa） | ＞12000 | |
| Dielectric constant∑（1MHz） | 2 | |
| Hardness（HRA） | 88 | |
For air-smash.
| Standard | Use |
| Diameter(mm) | Grinding all kinds of high-purity chemicals and pharmaceutical products |
| ＜300 |
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