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HBN0921 Boron Nitride Ring, BN Ring

  • Catalog No. HBN0921
  • Chemical Formula BN
  • Molecular Weight 24.82
  • Appearance Appearance
  • Melting Point 2973 °C

Boron Nitride Ring Description

Boron nitride, also known as BN, Hexagonal boron nitride (H-BN), and hot-pressed boron nitride, is a good self-lubricate ceramic that can withstand high temperature and maintain its lubricating capability in a high vacuum environment. Our Boron Nitride crucibles are made from hot-pressed boron nitride blank. Hexagonal boron nitride (H-BN) behaves similarly to graphite mechanically but offers excellent electrical resistance.

Boron Nitride Ring Advantages

- Low wetability to molten metal
- 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).

Boron Nitride Ring Applications

Boron Nitride ceramics from Advanced Ceramic Materials can withstand high temperatures in a high vacuum environment, plus it has excellent corrosion resistance and electrical resistance. Thus, Boron Nitride ceramic product is an ideal choice in a wide range of industries, such as:
- Used in nozzles for the nonferrous metals metallurgy industry
- Used in insulators for high-temperature furnace
- Used as break rings for horizontal casting machine
- Used to feed through for high voltage equipment
- Used in Boron Nitride parts for ion injection equipment

Boron Nitride Ring Available Materials

Material Description Availability
BN99 Hot pressed at high temperature (1900℃).
Excellent corrosion resistance and thermal conductivity. Limited wear resistance
Self-bonded and high purity(>99%)
Machinable Blanks
Finished Parts
BNBO General purpose material
Bonded by boric oxide
Finished Parts
BNCB Calcium borate bonded boron nitride
Enhanced moisture resistance
Finished Parts
BN60 BN 60%, SiO2 40% Finished Parts
BN40 BN 40%, SiO2 60% Finished Parts
ZSBN BN-45%, Zr2O3 45% Finished Parts

Specifications of BN99 and ZSBN for your reference!

Packing Service

ACM's Hot Pressed Boron Nitride Ring is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

Related Documents
Hexagonal Boron Nitride Ceramic Materials Brochure
Technical brochure for Hexagonal Boron Nitride Ceramic Materials, all grades. Revision March 2023.
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