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The Most Well-known Oxide Ceramic Material
Aluminum Oxide (Al2O3)
Alumina or aluminum oxide (Al2O3) is a major engineering material. It offers a combination of good mechanical properties and electrical properties. It is used more often than any other advanced ceramic material.
Alumina ceramics are commonly subdivided according to their alumina content ranging from 80% to more than 99%. Alumina can be produced in a range of purities with additives designed to enhance properties. Higher purity alumina demonstrates enhanced wear and corrosion resistance.
A wide variety of ceramic processing methods can be applied including machining or net shape forming to produce a wide variety of sizes and shapes of component. In addition, it can be readily joined to metals or other ceramics using metallising and brazing techniques.
Alumina based ceramics are by far the largest range of advanced ceramics made by HaoRui. Due to the important combination of properties, we have thoroughly researched the behaviour and characteristics of our alumina products to give you the best possible component.
Properties of Alumina/Aluminum Oxide (Al2O3)
Very good electrical insulation.
Moderate to extremely high mechanical strength.
Very high compressive strength.
High hardness.
Moderate thermal conductivity.
High corrosion and wear resistance.
Good gliding properties.
Low density.
Operating temperature without mechanical load 1,000 to 1,700°C.
Bioinert and food compatible.
Property | Item | 95% Al2O3 | 99% Al2O3 | 99.8%Al2O3 | Unit |
Mechanical Characteristics | Color | White | light yellow | Ivory | |
Bulk Density | 3.7 | 3.85 | 3.93 | g/cm3 | |
Water Absorption | 0 | 0 | 0 | % | |
Bending Strength | 300 | 310 | 370 | MPa | |
Compressive Trength | 2,300 | 2,400 | 2500 | MPa | |
Elastic Modulus | 320 | 340 | 390 | GPa | |
Fracture Toughness | 3~4 | 3~4 | 4 | MPa m1/2 | |
Weber Coefficient | 12 | 12 | 12 | m | |
Vickers Hardness | 1,400 | 1,600 | 1850 | HV 0.5 | |
Thermal Characterics | Coefficient of Line Thermal Expansion | 7~8 | 7~8 | 7~8 | 10-6 K-1 |
Thermal Conductivity | 20 | 29 | 32 | W/mK | |
Thermal Shock Resistance (Put in Water) | 250 | 200 | 280 | ΔT °C | |
Max Working Temperature | 1,500 | 1,600 | 1700 | °C | |
Electrical Characteristics | Volume Resistance At 20°C | >1014 | >1014 | >1014 | Ωcm |
Dielectric Strength | 15×106 | 15×106 | 15×106 | V/m | |
Dielectric Constant | 9 | 10 | 10 | εr | |
One MHZ Dielectric Loss Angle at 20°C | 0.0004 | 0.0002 | 0.0001 | tanδ | |
Chemical Characteristics | Nitric Acid (60%) 90°C | 0.1 | 0.1 | 0.05 | 24H WT Loss mg/cm2 |
Sulphuric Acid (95%) 95°C | 0.3 | 0.34 | 0.22 | ||
Caustic Soda (30%) 80°C | 0.9 | 0.95 | 0.04 |
Our Customized High Purity Alumina Ceramic Bushing offers superior performance in a variety of industrial applications due to its excellent thermal, electrical, and mechanical properties. Made from 99% Al2O3, this alumina ceramic bushing is highly resistant to wear, corrosion, and high temperatures, making it the ideal choice for challenging environments.
High Purity Material: Our alumina ceramic sleeve is manufactured using 99% high purity alumina, ensuring excellent mechanical strength, superior corrosion resistance, and exceptional durability in harsh conditions.
Temperature Resistance: This alumina sleeve can withstand extreme temperatures, with a melting point of over 2000°C, making it suitable for high-temperature applications like furnaces and kilns.
Exceptional Insulating Properties: The ceramic bushing provides excellent electrical insulation, ensuring safe and reliable performance in electrical components and high-voltage equipment.
Customizable Dimensions: We offer fully customizable alumina ceramic bushings to meet the specific needs of your project, from varying sizes and shapes to unique design specifications.
Wear and Corrosion Resistance: Thanks to the natural hardness of alumina ceramic, these ceramic bushings deliver excellent resistance to wear, abrasion, and chemical attack, ensuring longer service life compared to other materials.
Electrical Insulation: The alumina ceramic bushing is commonly used in electrical applications where high insulation is required, such as in power distribution equipment.
High-Temperature Environments: Ideal for use in kilns, furnaces, and other high-temperature industrial processes.
Mechanical Components: The alumina ceramic sleeve is often used in pumps, valves, and mechanical seals where corrosion resistance and mechanical strength are crucial.
Choose our high purity ceramic bushings for high-performance solutions in demanding industrial environments. The superior properties of alumina ceramic make it the perfect choice for high-stress, high-temperature, and corrosive applications.
By choosing our customized alumina ceramic bushings, you are ensuring reliability, durability, and exceptional performance in even the most challenging applications. Contact us today for a tailored solution to meet your specific requirements!
The Most Well-known Oxide Ceramic Material
Aluminum Oxide (Al2O3)
Alumina or aluminum oxide (Al2O3) is a major engineering material. It offers a combination of good mechanical properties and electrical properties. It is used more often than any other advanced ceramic material.
Alumina ceramics are commonly subdivided according to their alumina content ranging from 80% to more than 99%. Alumina can be produced in a range of purities with additives designed to enhance properties. Higher purity alumina demonstrates enhanced wear and corrosion resistance.
A wide variety of ceramic processing methods can be applied including machining or net shape forming to produce a wide variety of sizes and shapes of component. In addition, it can be readily joined to metals or other ceramics using metallising and brazing techniques.
Alumina based ceramics are by far the largest range of advanced ceramics made by HaoRui. Due to the important combination of properties, we have thoroughly researched the behaviour and characteristics of our alumina products to give you the best possible component.
Properties of Alumina/Aluminum Oxide (Al2O3)
Very good electrical insulation.
Moderate to extremely high mechanical strength.
Very high compressive strength.
High hardness.
Moderate thermal conductivity.
High corrosion and wear resistance.
Good gliding properties.
Low density.
Operating temperature without mechanical load 1,000 to 1,700°C.
Bioinert and food compatible.
Property | Item | 95% Al2O3 | 99% Al2O3 | 99.8%Al2O3 | Unit |
Mechanical Characteristics | Color | White | light yellow | Ivory | |
Bulk Density | 3.7 | 3.85 | 3.93 | g/cm3 | |
Water Absorption | 0 | 0 | 0 | % | |
Bending Strength | 300 | 310 | 370 | MPa | |
Compressive Trength | 2,300 | 2,400 | 2500 | MPa | |
Elastic Modulus | 320 | 340 | 390 | GPa | |
Fracture Toughness | 3~4 | 3~4 | 4 | MPa m1/2 | |
Weber Coefficient | 12 | 12 | 12 | m | |
Vickers Hardness | 1,400 | 1,600 | 1850 | HV 0.5 | |
Thermal Characterics | Coefficient of Line Thermal Expansion | 7~8 | 7~8 | 7~8 | 10-6 K-1 |
Thermal Conductivity | 20 | 29 | 32 | W/mK | |
Thermal Shock Resistance (Put in Water) | 250 | 200 | 280 | ΔT °C | |
Max Working Temperature | 1,500 | 1,600 | 1700 | °C | |
Electrical Characteristics | Volume Resistance At 20°C | >1014 | >1014 | >1014 | Ωcm |
Dielectric Strength | 15×106 | 15×106 | 15×106 | V/m | |
Dielectric Constant | 9 | 10 | 10 | εr | |
One MHZ Dielectric Loss Angle at 20°C | 0.0004 | 0.0002 | 0.0001 | tanδ | |
Chemical Characteristics | Nitric Acid (60%) 90°C | 0.1 | 0.1 | 0.05 | 24H WT Loss mg/cm2 |
Sulphuric Acid (95%) 95°C | 0.3 | 0.34 | 0.22 | ||
Caustic Soda (30%) 80°C | 0.9 | 0.95 | 0.04 |
Our Customized High Purity Alumina Ceramic Bushing offers superior performance in a variety of industrial applications due to its excellent thermal, electrical, and mechanical properties. Made from 99% Al2O3, this alumina ceramic bushing is highly resistant to wear, corrosion, and high temperatures, making it the ideal choice for challenging environments.
High Purity Material: Our alumina ceramic sleeve is manufactured using 99% high purity alumina, ensuring excellent mechanical strength, superior corrosion resistance, and exceptional durability in harsh conditions.
Temperature Resistance: This alumina sleeve can withstand extreme temperatures, with a melting point of over 2000°C, making it suitable for high-temperature applications like furnaces and kilns.
Exceptional Insulating Properties: The ceramic bushing provides excellent electrical insulation, ensuring safe and reliable performance in electrical components and high-voltage equipment.
Customizable Dimensions: We offer fully customizable alumina ceramic bushings to meet the specific needs of your project, from varying sizes and shapes to unique design specifications.
Wear and Corrosion Resistance: Thanks to the natural hardness of alumina ceramic, these ceramic bushings deliver excellent resistance to wear, abrasion, and chemical attack, ensuring longer service life compared to other materials.
Electrical Insulation: The alumina ceramic bushing is commonly used in electrical applications where high insulation is required, such as in power distribution equipment.
High-Temperature Environments: Ideal for use in kilns, furnaces, and other high-temperature industrial processes.
Mechanical Components: The alumina ceramic sleeve is often used in pumps, valves, and mechanical seals where corrosion resistance and mechanical strength are crucial.
Choose our high purity ceramic bushings for high-performance solutions in demanding industrial environments. The superior properties of alumina ceramic make it the perfect choice for high-stress, high-temperature, and corrosive applications.
By choosing our customized alumina ceramic bushings, you are ensuring reliability, durability, and exceptional performance in even the most challenging applications. Contact us today for a tailored solution to meet your specific requirements!