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Alumina (Al2O3) Ceramic Washer
New product
Alumina (Al2O3) ceramic washers boast high hardness, mechanical strength, temperature stability, thermal conductivity, insulation, and corrosion resistance. Ideal for seals and insulation, they find wide usage in electronics, high-temperature, and high-pressure environments. Heeger Materials offers top-quality Al2O3 Washers at competitive prices, offering specialized and customized services.
Please contact us if you need customized services. We will contact you with the price and availability in 24 hours.
Data sheet
| Materials | Al2O3 |
| Purity | 95%, 99%, 99.7%, or customized |
| Size | Per request or drawing |
More info
Alumina (Al2O3) Ceramic Washer is made of aluminum oxide ceramic - a fine ceramic material that is widely used in various industries. Aluminum oxide washer has superb performance in electrical insulation, high chemical resistance, and low thermal expansion. HM offers Alumina Ceramic Washers in various forms and sizes at high quality.
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Alumina (Al2O3) Ceramic Washer Specifications
Composition | Unit | HM-Al95 | HM-Al99 | HM-Al997 |
AL2O3 Content | % | 95 | 99 | 99.7 |
Color |
| White | Ivory | Ivory |
Tensile Strength | Kpsi | 32 | 38 | 36 |
Flexural Strength | Kpsi | 52 | 55 | 54 |
Compressive Strength | Kpsi | 300 | 377 | 350 |
Density | g/cc | 3.70 | 3.90 | 3.92 |
Hardness | HV, GPa | 13.8 | 17.2 | 18 |
Thermal Conductivity | W/(m K) | 25 | 30 | 30 |
Coefficient of Thermal Expansion | In / In°C (x10-6) | 7.7 | 7.8 | 7.8 |
Working Temperature | °C | 1500 | 1650 | 1750 |
Dielectric Constant |
| 9.5 | 9.7 | 9.8 |
Volume Resistivity (25°C) | Ohm-cm | >1014 | >1014 | >1014 |
*Customized services can be available according to specific drawings.
Alumina (Al2O3) Ceramic Washer Advantages
- High-temperature resistance
- Good gear resistance
- Good corrosion resistance
- High hardness
- Low thermal expansion
- Low friction coefficient
Alumina (Al2O3) Ceramic Washer Applications
- Power Electronics: Used between power devices and heat sinks to provide heat transfer and electrical isolation.
- Insulators and seals: Used as insulators in high-temperature electrical systems or as seals to prevent leakage or contamination.
Alumina (Al2O3) Ceramic Washer Packing
Alumina (Al2O3) Ceramic Washers are carefully packaged with adhesive-free surface protection tape and cardboard boxes to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.
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