Boron Nitride Tube, BN Tube-Heeger Materials Inc View larger

Boron Nitride Tube, BN Tube

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Boron Nitride Tube, BN Tube, is made of powdered hexagonal boron nitride through high-temperature vacuum hot-pressing sintering. Heeger Materials is a worldwide supplier of high-quality Boron Nitride Tubes and other boron nitride products.

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Data sheet

Purity99% - 99.999%
Sizesmall than 12″ diameter x 12″ length

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Boron nitride tube is mainly used as insulating sleeves. Boron Nitride (BN), Hexagonal boron nitride (H-BN), and hot-pressed boron nitride are good self-lubricate ceramics that will withstand heat and maintain their lubricating capability during a high vacuum environment. Hexagonal boron nitride (H-BN) behaves almost like graphite mechanically, but it offers better electric resistance. The Boron Nitride Tubes (BN Tubes) from Heeger Materials are made up of hot-pressed boron nitride blank.

BN TubesBoron Nitride (BN) Tube

Boron Nitride Tube Advantages

  • Low wettability to molten metal
  • Low dielectric constant
  • Relatively high dielectric strength
  • Relatively high thermal conductivity with low thermal expansion
  • Relatively high thermal shock resistance
  • Extremely high working temperature with proper inert gas protection (>3000C has been recorded).
  • Chemical Vapor Deposition (CVD)

Boron Nitride Tube Materials




Hot pressed at high temperature (1900).
 Excellent corrosion resistance and thermal conductivity. Limited wear resistance
 Self-bonded and high purity(>99%)


General-purpose material
 Bonded by boric oxide


Calcium borate bonded boron nitride
 Enhanced moisture resistance


BN 60%, SiO2 40%


BN 40%, SiO2 60%


BN-45%, Zr2O3 45%

Boron Nitride Tube Applications

Boron Nitride ceramic from Heeger Materials can endure heat within a high vacuum environment, plus it's chemically inert — excellent corrosion resistance and electric resistance. Therefore, Boron Nitride ceramic product is a perfect choice for a wide selection of industries, such as:

  • Electric insulators in vacuum system
  • Boron Nitride ceramic components for PVD, MOCVD, and MBE systems.
  • Nozzles for the nonferrous metals metallurgy industry
  • Spacers for glass melting
  • Insulators for high-temperature furnace

Types of Hexagonal Boron Nitride Materials

  • Pyrolytic boron nitride PBN: 99.99% boron nitride
  • High purity boron nitride HPBN: >98.5% boron nitride + boron oxide
  • Calcium Borate Boron Nitride CABN: >97.5% Boron Nitride + Calcium Borate
  • Aluminum Nitride Boron Nitride ALBN: Boron Nitride + Aluminum Nitride + Boron Aluminum Oxide
  • Zirconia Boron Nitride ZRBN: Boron Nitride + Zirconia + Boron Oxide
  • Zirconium Aluminum Boron Nitride ZABN: Boron Nitride + Zirconia + Aluminum Nitride + Aluminum Boron Oxide
  • Silicon carbide boron nitride SCBN: boron nitride + silicon carbide + boron silicon oxide

Boron Nitride Tube Targeted Market

  • High-temperature furnace manufacturing
  • Ceramic manufacturing semiconductor
  • PVD coating
  • Microwave etc.

Boron Nitride Tube Packing

Boron Nitride (BN) Tubes are carefully packaged in cartons boxes with foam protection to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

Boron Nitride (BN) Tube Packing

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