Chemical Properties
• High purity (typically ≥99% Al₂O₃)
• Chemically stable
• Excellent corrosion resistance
• Inert to most acids and alkalis
Thermal Properties
• Very high melting point (~2050°C)
• Excellent thermal stability
• Low thermal expansion
• Good thermal shock resistance (grade dependent)
Mechanical Properties
• Extremely hard (Mohs hardness ~9)
• High compressive strength
• Excellent wear and abrasion resistance
Electrical Properties
• Very good electrical insulation
• High dielectric strength
• Used in electrical ceramics and insulators
Physical Characteristics
• White fine powder
• Controlled particle size distribution
• Mainly α-phase (alpha-alumina)
• High density and low porosity (after sintering)
The standardized sequence of steps, technologies, and methodologies used to transform raw materials or inputs into high-quality finished products.