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Boron Nitride Plate, Boron Nitride Sheet (H-BN)

Boron Nitride Plate, Boron Nitride Sheet (H-BN)

Boron Nitride Plate or Boron Nitride Sheet, also known as h-BN plate or sheet, is a high-performance ceramic material made from boron and nitrogen. It has excellent thermal stability, high electrical insulation, low dielectric constant, and high mechanical strength. The plate or sheet is made by pressing and sintering boron nitride powder, which results in a dense, uniform, and smooth surface.

Boron Nitride Plate or Sheet has a wide range of applications, including:

  1. High-temperature insulation: It can withstand temperatures up to 2200°C without melting or decomposing, making it an ideal material for high-temperature insulation in furnaces, heaters, and other industrial applications.

  2. Electrical insulation: Boron Nitride Plate or Sheet has excellent electrical insulation properties and can be used as an insulating material for electronic components, high-voltage equipment, and insulators.

  3. Mold release: Due to its low coefficient of friction, Boron Nitride Plate or Sheet is an excellent mold release agent for use in the casting of metals, plastics, and other materials.

  4. High-temperature lubrication: Boron Nitride Plate or Sheet is an excellent dry lubricant for use in high-temperature environments where other lubricants would break down.

  5. Aerospace and defense: Boron Nitride Plate or Sheet is used in aerospace and defense applications due to its excellent thermal stability, electrical insulation, and low outgassing properties.

Boron Nitride Plate or Sheet is available in a variety of thicknesses and sizes and can be customized to meet specific requirements.

Boron Nitride Ceramics Specification

CG Material production formulations are developed to address the varied application problems in which ceramic components are commonly used. Many industrial applications push the envelope on specific requirements leading to the development of new formulations to successfully address them.

Item No. Description Purity Lot Size
CG-NI05-98 Boron Nitride Powder
Particle Size: 3 µm, 200 mesh or 325mesh
BN > 98 %,
B2O3 < 0.6%,
Ca < 0.015%,
Si < 0.12%
100 kg
CG-NI05-99 Boron Nitride Powder
Particle Size: 3 µm, 200 mesh or 325mesh
BN > 99 %,
B2O3 < 0.4%,
Ca < 0.01%,
Si < 0.10%
100 kg

Comparison of Boron Nitride Ceramics

Compositions BN>98% BN+SiC+ZrO2 BN+AIN
Binder B2O3 / AlBO3
Density 2.1-2.2 g/cm3 2.3-3.0 g/cm3 2.5-2.6 g/cm3
25°C Volume Resistivity >1013 Ω·cm >1012 Ω·cm >1014 Ω·cm
Max. Service Temp. (°C)
Inert Gas;
High Vacuum










Flexural Strength 75 Mpa 100 Mpa 130 Mpa
Compressive Strength 100 Mpa 300 Mpa 250 Mpa
Coefficient of Thermal Expansion
2.0 x 10–6/K 4.0 x 10–6/K 4.5 x 10–6/K
Thermal Conductivity 30 W/mK 40 W/mK 60 W/mK


Boron Nitride Plate 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

Boron Nitride Plate Advantages

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

Boron Nitride Plate Applications

Boron Nitride ceramic from CG Material can withstand high temperature in a 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:

-Electric insulators in vacuum system
-Insulators for high-temperature furnace
-Spacers for glass melting
-Boron Nitride parts for ion injection equipment


We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.


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