Modern alumina (Al₂O₃) ceramics rank among the strongest and hardest ceramic materials available. They exhibit high dielectric strength and excellent electrical insulation properties, even at elevated temperatures often found in demanding applications. Alumina also offers outstanding mechanical strength, superior thermal conductivity, and excellent resistance to chemical corrosion and wear, both at ambient and high temperatures. On the Mohs hardness scale, alumina is second only to diamond, making it highly effective in wear- and abrasion-resistant applications.
The exceptional properties of alumina can be further tailored through modifications in composition and manufacturing processes. At Techo Cera, we are recognized for producing high-precision alumina components with consistent quality and dimensional accuracy. The table below outlines several standard alumina grades, though we are also capable of working with customized formulations.
| Properties | Value |
|---|---|
| Melting point (℃) | 2054 |
| Thermal Shock Resistance (℃) | 200 |
| Thermal conductivity (W/(m·K)) | 30 |
| Thermal expansion coefficient(×10⁶) | 5.3 |
| Specific gravity | 3.9 |
| Hardness(Hv)(GPa) | 18 |
• Insulators,parts insulating electricity
• Furnace walls, furnace parts,jigs
• Nozzles,spinning tube
• Reaction crucible,reaction vessels;
• Semiconductor-related parts;
• Liquid crystal production parts;
• Electron tube parts,pumps, grinding materials
