| Name | Arc crucible | |
| 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 | |
| Highest temperature（℃） | 1800 | |
Good chemical stability and thermal shock resistance, high temperature.
| Standard | Use | ||||
| Dimensions(mm) | Capacity（cc） | TV fired powder phosphors, rare earth materials, precious metals, roasting high, medium and low ceramic capacitors, NTC, PTC piezoelectric ceramic and lithium cobalt oxide, lithium manganese oxide powder of the best baking container | |||
| The diameter | Diameter under | Height | Wall thickness | ||
| 25～210 | 15～131 | 25～300 | ＞2 | 5～5000 | |
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