1. High Temperature Resistance: Alumina disks exhibit excellent thermal stability, allowing them to withstand temperatures up to 1700°C without losing their structural integrity. 2. Exceptional Hardness and Strength: With a hardness rating of approximately 9 on the Mohs scale, alumina disks offer superior mechanical strength, making them highly durable and resistant to wear, abrasion, and impact. 3. Corrosion Resistance: Alumina disks is chemically inert, providing outstanding resistance to corrosion from most chemicals, acids, and alkalis, ensuring long-term performance in aggressive environments. 4. Electrical Insulation: The material is a great electrical insulator, making alumina disks suitable for use in electrical applications requiring high dielectric properties. 5. Thermal Conductivity: While being an excellent electrical insulator, alumina disks also has good thermal conductivity, which helps to dissipate heat efficiently in various applications. 6. Low Density: Alumina disks possess a relatively low density, making them lightweight compared to other materials with similar performance characteristics.