Crucible for the semiconductor industry

ceramicfor molten metal transferfor high-temperature applications

Product overview
The Alumina Crucible (Al2O3 ≥99%) is a dense, yellow ceramic vessel engineered for high-temperature industrial processes. It combines excellent heat resistance, mechanical strength and thermal-shock stability, making it suitable for sintering, material processing and containment of molten metals. The crucible also provides reliable electrical insulation and chemical stability in oxidizing and reducing atmospheres.

Key features

• Al2O3 composition ≥99% for high refractoriness
• Excellent heat resistance and retained strength at elevated temperature
• High mechanical strength and rigidity
• Good thermal conductivity and strong thermal shock resistance
• Chemical and corrosion resistance to molten metals and aggressive media at high temperature
• Stable in both oxidizing and reducing atmospheres
• Good electrical insulation at elevated temperature

Applications

• Processing of piezoelectric, dielectric and other electronic-ceramic component materials
• Positive electrode material processing
• PZT material sintering and handling
• Synthesis and firing of luminescent materials
• Containment and processing of molten metal (casting, holding)
• NAS reservoir and high-temperature storage applications

Main technical data
Al2O3: ≥99%
Color: Yellow
Specific Density: 3.9 g/cm³
Hardness: 15 GPa
Elastic Modulus: 55000 N
Compressive Strength: 2082 MPa
Flexural Strength: 326 MPa
Tensile Strength: 131 MPa (20℃)
Fracture Toughness: 5.42 MPa·m1/2
Poisson’s Ratio: 0.18

Technical specifications

• Material composition: Al2O3 ≥99%
• Color: Yellow
• Specific density: 3.9 g/cm³
• Hardness: 15 GPa
• Elastic modulus: 55000 N
• Compressive strength: 2082 MPa
• Flexural strength: 326 MPa
• Tensile strength: 131 MPa (measured at 20℃)
• Fracture toughness: 5.42 MPa·m1/2
• Poisson's ratio: 0.18
• Properties: excellent heat resistance, thermal shock resistance, corrosion resistance to molten metal and chemicals, stability in oxidizing/reducing atmospheres, good electrical insulation at high temperature