95% Alumina Creative Ceramic Pepper Mill Grinder For Coffee
95% Alumina Ceramic Grinder Coffee Pepper Mill
Features:
1. A variety of specifications available
2. high temperature resistance
3. Low thermal conductivity
4. Chemical inertness
5. Good Wear resistance
6. High electrical insulation
7. Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other products.
Alumina ceramic is a kind of structural ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity, dielectric loss, stable electrical performance characteristics. Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other products.
| Properties | Unit | Steatite ceramic | 95% Al2O3 | 99% Al2O3 | Zirconia Ceramic |
| Density | g/cm³ | 2.7 | 3.6 | 3.8 | 5.6 |
| Flexural strength | Mpa | 145 | 300 | 300 | 354 |
| Hardness | Gpa | 5.7 | 7 | 10.7 | 12.3 |
| Elastic modulus | Gpa | 120 | 275 | 320 | 205 |
| Poissons ratio | - | 0.21 | 0.22 | 0.22 | 0.30 |
| Linear expansion coefficient | x 10-6/℃ | 7.9 | 7.1 | 7.8 | 9 |
| Thermal conductivity | w/(m.k) | 2.5 | 20 | 25 | 2.5 |
| Specific Heat | *10-3J/(kg*K) | 0.75 | 0.78 | 0.78 | 0.4 |
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