Alumina tubes and rods are widely used in engineering due to the excellent combination of properties of alumina.
1. High thermal conductivity and compressive strength
2. Good thermal shock resistance and wear resistance
3. Low thermal expansion
4. Good chemical resistance against acid or alkali
5. Electrical insulation
6. Cost effective
1. Used as protectors, like protection tubes, and thermal couples.
2. Used as a material for the chemical industry against corrosion.
3. Used for making parts of semiconductors, machinery, etc.
| Material | Aluminum Oxide |
|---|---|
| Purity | 99% |
| Application | Protector, insulator |
| Size | Dia.1-150mm |
| Packing | Wooden case with carton box |
| Items | Typical Value |
|---|---|
| Composition | Al2O3 99% |
| Color | Ivory |
| Density | 3.8-3.85 g/cm3 |
| Bending Strength | 300 MPa |
| Hardness | 1700 HV |
| Thermal Conductivity | 31 W/(m K) |
| Thermal Expansion | 8×10-6/K |
| Volume Resistivity | >1012 Ωcm |
| Dielectric Strength | 20 KV/mm |
| Dielectric Constant | 9.2-10.5 |
| Max. Working Temperature | 1550 °C |
