Wear Resistant 99% Aluminum Oxide Ceramic High Insulation Ring Ceramic Spacer
Wear Resistant High Insulation 99% Alumina Ceramic Ring Ceramic Spacer
Alumina Ceramic Ring is wildely used in many fields including mechanical, electronics, electrical, semiconductor,automotive, textile, etc. For the good propertities, more and more customers choose Alumina ceramic materials for their applications. Alumina Ceramic can be made to Ceramic Nozzles, Ceramic Sprayers Cyclones, Ceramic Linings, Milling Systems, Ceramic Thread guides, etc. Customized designs are very often to be made.
Properties:
* Good electrical insulation
* High dimensional tolerances
* Excellent corrosion resistance
* Very high working temperatures
* Excellent thermal shock properties
Application:
* Furnace work tubes
* Kiln furniture, components & accessories
* Thermocouple protection tubes
* Heater Support Elements
* High Temperature Electrical Insulators
* Extreme temperature measurement components
* Ceramic Laser components
* High voltage electrical insulators
| Properties | Unit | Steatite ceramic | 95% Al2O3 | 99% Al2O3 | Zirconia Ceramic |
| Density | g/cm³ | 2.8 | 3.6 | 3.8 | 5.6 |
| Flexural strength | Mpa | 145 | 300 | 300 | 354 |
| Max Working Temperature | ℃ | 1100 | 1400 | 1600 | 1400 |
| Sintering temperature | ℃ | 1350 | 1700 | 1750 | 1550 |
| Heat resistance | T(℃) | 200 | 220 | 200 | 350 |
| 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 |
| Insulation breakdown Intensity | KT/mm | 10 | 16 | 18 | 15 |
| 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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