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Technical Ceramics

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Hexagonal Boron Nitride Ceramic Tube

BN Boron Nitride is made by hot pressing at high temperature and pressure. It can easily be machined into custom shapes. The unique combination of highly exceptional thermal, physical and chemical properties of BN makes it ideal for solving tough challenges in various industrial applications.
  • Density :

    2.0 - 3.0 g/cm3
  • Max. Service Temp. :

    900 - 2,000 degree C
  • Thermal Conductivity :

    30 - 80 W/m.K
  • Dielectric Strength :

    35 KV/mm
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Product Detail

▼ Material Introduction

BN - Boron Nitride Ceramic is often referred to as “White Graphite” because it has a microstructure similar to that of graphite. However, ulike graphite, BN is an excellent electrical insulator that has a higher oxidation temperature. It offers high thermal conductivity and good thermal shock resistance and can be easily machined in virtually any shape. In inert/reducing atmospheres, BN can withstand temperatures over 2,000°C. It's commonly used as an insulator in contact with tungsten and graphite electrodes at those temperatures. Besides, Boron Nitride can be used in oxidizing atmospheres up to 900°C. It is not wet by most molten metals and slags and can be used in contact with most molten metals including aluminum, sodium, lithium, silicon, tin, germanium, and copper.


▼ Features (Typical Applications)

  Excellent Electrical Properties (Electrical Insulator, Plasma Chamber)
  Good Thermal Conductivity (Heat Sink, Coil Form, E-beam Evaporation Liner)
  Outstanding Chemical Inertness (Melting Crucibles, Gas Atomization Nozzles)
  Extremely High Use Temperature (Vacuum Furnace Supports, Setter Plates, Crucibles)
  Non-wetting & Good Lubrication (Melting Crucibles, Gas Atomising Nozzles, Mold Liners)
  High Thermal Shock Resistance (Parts for Plasma Arc Welding, Laser Supports)


▼ Popular Applications

  CVD Crucibles    Microwave Tubes 
  Low Friction Seals    Sputtering Targets 
  Plasma Arc Insulators    Microcircuit Packaging 
  Vacuum Melting Crucibles    Sealing, Brazing, and Metallizing Fixtures
  High Temperature Furnace Fixtures and Supports    Horizontal Continuous Casting Break Rings
  Doping Wafers in Silicon Semiconductor Processing    Electronic Parts(Heat Sink, Substrate, Coil Form...)     





● For Hall Effect Thruster
● For Horizontal Continuous Casting
● For Solar and Photovoltaic Industry






● As Melting Crucibles and Liners
● For High Temp. Vacuum Furnaces
● For Metal Powder Gas Atomising


▼ Material Date Sheet

Hexagonal Boron Nitride Properties

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