Feature
- We provide large materials with high quality of 99.5% or more.
- Size of 4 m or more is also available.
Maximum dimension: - Can be used for important parts of various machinery or equipment.
Alumina structured Ceramics
| Alumina large disc
Φ1200×12ｔ |
Alumina large plate
1100×1000×20ｔ |
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| Alumina long plate
2600×120×15t |
Alumina large frame
1100×1000×23ｔ |
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Material and properties of alumina main products
| Chatacteristic item | Unit | Chatacteristic | |
| Main component (content) | Al2O3（99.8％） | ||
| Color | 淡黄色 | ||
| Bulk specific gravity | 3.92～3.93 | ||
| Water absorption rate | ％ | 0 | |
| Mechanic Characteristic | hardness | Kgf/mm2；HV | 1600 |
| Flexural strength | Mpa | 400 | |
| Young’s modulus | ×106 Kgf/cm2 | 3.9 | |
| Fracture toughness | Mpa・m1/2 | 3.6 | |
| Heat Characteristic |
specific heat | Cal/ｇ・℃ | 0.22 |
| Thermal conductivity | Cal/cm・sec・℃ | 0.072 | |
| Coefficient of thermal expansion（RT～50℃） （0～800℃） |
×10-6/℃ | 5.7 8.0 |
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| Thermal shock temperature | ℃ | 200 | |
| Electrical Characteristic |
Dielectric constant | – | 10.2（1MHZ） |
| Dissipation factor | ×10-3 | 8.2（1MHZ） | |
| Volume resistivity（20℃） | Ω・cm | >1014 | |
| Dielectric strength | kV/mm | 12 | |
