Ceramic Alumina
Ceramic Alumina Specifications
Aluminum Oxide Ceramic is high purity 99.8% aluminum oxide (alumina) ceramic.
Maximum wear resistance and corrosion resistance.
High density, diamond like hardness, fine grain structure and superior mechanical strength.
The material of choice for a wide range of demanding applications.
Alumina Ceramic in 99.95% alumina is also available.
Technical Data Ceramic Alumina
| Properties | Units | Value |
| Composition | wt% | 99.8% Alumina |
| Color | White | |
| Bulk Density | g/cm3 | 3.93 |
| Water Absorption | % | 0 |
| Gas Permeation | % | 0 |
| Grain Size | Microns | 4 |
| Hardness (Vickers) | HV | 2017 |
| Flexural strength | MPa (psi – 103) | 382 (55) |
| Modulus of Elasticity | GPa (psi – 106) | 393 (57) |
| Fracture Toughness | MPa – m1/2 | 5 |
| Poisson’s Ratio | – | 0.22 |
| Thermal Expansion (25°C – 1000°C) | 10-6/°C (10-6/°F) | 8.2 (4.6) |
| Thermal Conductivity | Btu – in/ft2 h – °F | 260 |
| Specific Heat | Cal/g – °C | 0.21 |
| Maximum Temperature Use (no load) | °C [° F] | 1700 ° [3092 °] |
| Dielectric Strength | AC – volts / mils | 230 |
| Dielectric Constant | 9.7 | |