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[China]
Trade Verify
Address: Dagang Village,Dingshu Town, Yixing City,Jiangsu Province, China
Contact name:Bruce
Yixing City Kam Tai Refractories Co.,ltd |
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Verified Suppliers
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| Alumina Ceramic Performance | |||||
| Item | Unit | 95 Al2O3 | 96 Al2O3 | 99 Al2O3 | |
| Physical Characteristics | Heat resistance | ℃ | 1500 | 1550 | 1800 |
| Bulk dnsity | g/cm³ | 3.6 | 3.6 | 3.9 | |
| Water absorption | % | 0 | 0 | 0 | |
| Mechanical Characteristics | Flexural strength | Mpa | 320 | 340 | 360 |
| Hardness vickers | Gpa | 12.2 | 13.5 | 15.6 | |
| Elastic mdulus | Gpa | 280 | 320 | 370 | |
| Poisson'radio | 0.22 | 0.23 | 0.23 | ||
| Thermal Characteristics | Linear expansion coeffcient | (20-500℃)10^-6/℃ | 7.1 | 7.2 | 8 |
| Thermal conductivity | w/(m.k) | 16 | 24 | 32 | |
| Specific heat | *10^-3(kg*K) | 0.78 | 0.78 | 0.9 | |
| Electrical Characteristic | Dielectric constant(1MHZ) | - | 9 | 9.4 | 9.9 |
| Dielectric loss angle | *10^-4 | 15 | 5 | 1 | |
| Dielectric strength | *10^6V/m | 12 | 15 | 15 | |
Main Features
1) High hardness.
2) High heat resistance : Alumina ceramic has execellent themal
stability,which means that it is widely used in areas where
resistance to high temperatures is essential.
3) Good wear resistance : Alumina ceramic is the material of choice
for alumina wear parts.
4) High electrical resistivity : Alumina is an electrically
insulating material.
5) High corrosion resistance : It is insoluble in water and only
slightly soluble in strong acid and alkaline solutions. Good
chemical stability of alumina leads to high corrosion resistance.
