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Premium China Al₂O₃ Ceramic Components from Top Suppliers and Factory for Superior Performance

Alumina ceramics, primarily composed of Al₂O₃, are specialized materials manufactured by reputable suppliers and factories in China. These advanced ceramics incorporate rare metal oxides as fluxes and are subjected to high-temperature roasting exceeding 1,000 degrees Celsius. Known for their exceptional properties, alumina ceramics exhibit remarkable wear resistance, corrosion resistance, heat resistance, and impact resistance. Additionally, they possess high hardness, high voltage resistance, and excellent insulation and heat conductivity. Trustworthy China suppliers provide these high-quality alumina ceramics, perfect for various industrial applications

    Product Details

    High Hardness

    Second only to diamond and cubic boron nitride, Vickers hardness is about 1600-1700 HV and excellent wear resistance, while having a relatively low friction coefficient, making it ideal for wear-resistant components such as sealing rings, bearings, and liners under conditions of no lubrication or dry friction;

    Outstanding Chemical Corrosion Resistance

    Can resist most strong acids (including hydrochloric acid, nitric acid, sulfuric acid at high temperatures), strong alkalis, organic solvents and molten metals, and maintain stable performance in high-temperature, high-humidity and corrosive gas environments. Its excellent high-temperature stability, melting point up to 1650°C, and low coefficient of thermal expansion make it suitable for high-temperature applications such as high-temperature furnaces (furnace tubes, crucibles), thermocouple protection tubes, heat exchanger components, and burner nozzles.

    Excellent Electrical Insulator

    Possesses a very high resistivity, high dielectric strength, moderate dielectric constant, and low dielectric loss. Moreover, its density is relatively low, significantly lighter than metals such as steel, which is advantageous for achieving lightweight designs.

    Frequently Asked Questions

    How hard is this material compared to others?
    This material features extremely high hardness, second only to diamond and cubic boron nitride, with a Vickers hardness rating of approximately 1600-1700 HV.
    Can this material withstand exposure to strong acids and alkalis?
    Yes, it provides outstanding chemical corrosion resistance. It can resist most strong acids (including hydrochloric, nitric, and sulfuric acids at high temperatures), strong alkalis, organic solvents, and molten metals.
    What is the melting point and thermal stability of this material?
    It exhibits excellent high-temperature stability with a melting point up to 1650°C and has a low coefficient of thermal expansion, making it ideal for high-temperature applications.
    Is this material suitable for electrical insulation?
    Yes. It is an excellent electrical insulator, featuring very high resistivity, high dielectric strength, a moderate dielectric constant, and low dielectric loss.
    How does its weight compare to traditional metals like steel?
    Its density is relatively low, making it significantly lighter than metals such as steel, which is highly advantageous for lightweight structural designs.
    What are the typical applications for this product?
    Typical applications include wear-resistant components like sealing rings, bearings, and liners, as well as high-temperature components such as furnace tubes, crucibles, thermocouple protection tubes, heat exchanger components, and burner nozzles.