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BN0998 Boron Nitride Rod, BN Rod

  • Catalog No. BN0998
  • Molecular Formula 24.82
  • Appearance White
  • Melting Point 2973 °C
  • Density 2.1 g/cm3 (h-BN); 3.45 g/cm3 (c-BN)
  • Solubility in Water Insoluble
  • Refractive Index 1.8 (h-BN); 2.1 (c-BN)
  • Electrical Resistivity 13 to 15 10x Ω-m
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Boron Nitride Rod Description

Boron nitride, or BN, is a chemical compound with equal numbers of boron and nitrogen atoms. The hexagonal boron nitride (HBN) corresponding to graphite is the softest and most stable form among BN polymorphs, and is therefore used as a lubricant and an additive to cosmetic products. The cubic (CBN) variety analogous to diamond has a high hardness which is inferior only to diamond. The rare wurtzite BN (WBN) modification is similar to lonsdaleite, and it may even be harder than CBN.

Boron Nitride Rod 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!

Boron Nitride Rod Advantages

BN rod is easily machinable. It has high performances:

- Low wetability 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 Rod Applications

Boron Nitride ceramic from Advanced Ceramic Materials (ACM) can withstand high temperature in the high vacuum environment, plus it is chemically inert -- 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:

-Evaporator Boats
-Nozzles for nonferrous metals metallurgy industry
-Electric insulators in the vacuum environment
-Insulators for high-temperature furnace
-Spacers for glass melting

Packing Service

ACM's Boron Nitride Rod is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition. Please contact us for other forms of boron nitride machined products.

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