1. High Temperature Resistance: Al₂O₃ crucibles can withstand extremely high temperatures, often exceeding 1700°C, making them suitable for various high-temperature applications. 2. Chemical Stability: Al₂O₃ crucibles exhibit excellent chemical stability and resistance to most acids and alkalis, which ensures the integrity of the materials being processed. 3. Mechanical Strength: Al₂O₃ crucibles have high mechanical strength and hardness, providing durability and longevity even under harsh conditions. 4. Thermal Shock Resistance: Al₂O₃ crucibles possess good thermal shock resistance, allowing them to endure rapid temperature changes without cracking or breaking. 5. Low Thermal Expansion: Al₂O₃ crucibles the low thermal expansion coefficient minimizes the risk of deformation and cracking during thermal cycling.