
E mōhiotia ana hoki ko te oko korundum, ko te āhuatanga o te oko alumina he nui te ihirangi alumina, mai i te 95% ki te 99%. Ka taea te mahi tonu i te 1650°C, me te pāmahana ratonga mōrahi tae atu ki te 1800°C. He tohunga tā mātou kamupene ki te hanga oko rahi ritenga hei whakatutuki i ngā whakaritenga motuhake kāore i te paerewa.
| Momo Porotaka Para Alumina | ||||
| Te Diamita o Runga (mm) | Diamita o raro (mm) | Teitei (mm) | Matotoru (mm) | Rōrahi (ml) |
| 50-100 | 50-100 | 35-116 | 3 | 5-5000 |
| Momo Tapawhā Para Alumina | ||||
| Roa (mm) | Whānui (mm) | Teitei (mm) | Matotoru (mm) | Rōrahi (ml) |
| 60-200 | 30-150 | 15-190 | 3 | 5-5000 |
| Tuhipoka: Kei te wātea ngā rahi ritenga ina tonoa. | ||||
| Ngā Āhuatanga Uku | Kaihautū Ukume Alumina | ||
| Te Hanganga Matua | Al2O3≥99% | Al2O3≥95% | ZrO2≥94% |
| Kiato (g/cm³) | 3.85 | 3.6 | 5.9 |
| Te mimiti wai (%) | 0 | 0 | 0 |
| Te Pāmahana Whakatō (°C) | 1690 | 1670 | 1650 |
| Te pakeketanga (HV) | 1700 | 1600 | 1400 |
| Kaha Whakapiko 4pt (MPa) | >3500 | >2900 | >11000 |
| Kaha Pehi (Kgf/cm²) | 30000 | 25000 | 25000 |
| Te Pāmahana Whakahaere Mōrahi (°C) | 1500 | 1400 | 1600 |
| Tauwehenga Whānuitanga Wera (10⁻⁶/°C) (0-1000°C) | 8 | 7.8 | 10 |
| Ātete Ru Wera T (°C) | 200 | 220 | 350 |
| Te Arahi Wera (W/m·K) | 31 | 22 | 3 |
| Ātete Rōrahi (Ω·cm) | >10¹² | >10¹² | >10¹² |
| Kaha Whakakore Hiko (KV/mm) | 18 | 16 | 15 |
| Pūmau Whakakore Hiko (1MHz) | 9.2-10.5 | 9.0-10 | 12.5 |
| Ngā tono | Ngā ahumahi hikohiko, ngā ahumahi motuka, ngā ahumahi whakarewa, ngā ahumahi maitai, ngā ahumahi matū, me ētahi atu. | ||