Alumina Ceramics: 7 Critical Properties & Industrial Applications (2024 Guide)

Core Properties Section 

1. Extreme Hardness & Wear Resistance

   • Vickers Hardness: 1600-2000 HV (3× harder than tool steel)

   • Applications: Cutting tools, abrasive slurry pump seals

2. Thermal Stability

   • Max Operating Temp: 1,750°C (in inert atmospheres)

   • CTE: 8.1×10⁻⁶/K (prevents thermal stress cracking)

3. Dielectric Strength

   • 15-35 kV/mm (ideal for high-voltage insulators)

4. Chemical Inertness

   • Resists acids/alkalis (except HF) – *0.02 mm/year corrosion rate* vs. chemicals

5. Biocompatibility

   • ISO 10993-certified for medical/dental implants

Industrial Applications