new material
Aluminum oxide (Al₂O₃) ceramic blocks offer exceptional hardness, optimized wear resistance, and superior thermal stability. Designed for industrial applications, they ensure reliable structural integrity, extended lifespan, and high-performance efficiency.
Product Overview:
Aluminum oxide (Al₂O₃) ceramic block is a ceramic material primarily composed of aluminum oxide. It offers excellent electrical conductivity, mechanical strength, and high-temperature resistance. This ceramic block is widely used in thick-film integrated circuits and other industrial applications that require high hardness and wear resistance. It also exhibits strong chemical corrosion resistance, making it suitable for various harsh working environments.
Product Features:
- High Hardness:Rockwell hardness of HRA 80-90, nearly as hard as diamond, far surpassing wear-resistant steel and stainless steel.
- Excellent Wear Resistance:Wear resistance is 266 times that of manganese steel and 171.5 times that of high-chromium cast iron, greatly extending equipment lifespan.
- Lightweight:Density of 3.5g/cm³, half that of steel, reducing equipment load.
- High Temperature and Corrosion Resistance:Suitable for use in high-temperature and highly corrosive environments.
Applications:
- Electronics Industry:Used as a substrate material for thick-film integrated circuits.
- Mechanical Manufacturing:Ideal for making highly wear-resistant mechanical parts, especially in environments with heavy wear.
- Chemical Industry:Used in chemical reactors, pipelines, and other equipment to resist corrosion and high temperatures.
- Mining Industry:Suitable for high-wear environments, such as ore processing equipment.
- Aerospace:As a high-temperature and lightweight material, it is widely used in aerospace components.
| Property | Unit | ≥95 | ≥99 | ≥99.5 | ≥99.8 |
| Bulk Density | g/cm³ | 3.7 | 3.8-3.85 | 3.85 | 3.85 |
| Hardness | MPa≥ | 86 | 88 | 88 | 88 |
| Bending Strength | HRA≥ | 300 | 350 | 400 | 400 |
| Max Service Temp | ℃ | 1500 | 1500 | 1500 | 1500 |
| Linear Expansion Coefficient | ×10⁻⁶/℃ | 7.5 | 8.2 | 8.2 | 8.2 |
| Dielectric Constant | tr (20℃, 1MHz) | 9 | 9.2 | 9.2 | 9.2 |
| Dielectric Loss | tanδ×10⁻⁴, 1MHz | 3 | 2 | 2 | 2 |
| Volume Resistivity | cm (20℃) | 10¹³ | 10¹⁴ | 10¹⁴ | 10¹⁴ |
| Breakdown Strength | kV/mm, DC≥ | 20 | 20 | 20 | 20 |
| Acid Resistance | mg/cm²≤ | 0.7 | 0.7 | 0.7 | 0.7 |
| Alkali Resistance | mg/cm²≤ | 0.2 | 0.1 | 0.1 | 0.1 |
| Wear Resistance | g/cm²≤ | 0.2 | 0.1 | 0.1 | 0.1 |
| Compressive Strength | MPa≥ | 2500 | 2500 | 2500 | 2800 |
| Flexural Strength | MPa≥ | 200 | 350 | 350 | 350 |
| Elastic Modulus | GPa | 300 | 350 | 350 | 350 |
| Poisson's Ratio | Lateral Strain Coefficient | 0.2 | 0.22 | 0.22 | 0.22 |
| Thermal Conductivity | W/m·K (20℃) | 20 | 25 | 25 | 25 |
