Skip to product information
1 of 3


PBN Sheet, Pyrolytic Boron Nitride Sheet

PBN Sheet, Pyrolytic Boron Nitride Sheet

Pyrolytic Boron Nitride Sheet, also known as PBN Sheet, is a type of boron nitride ceramic material that is produced through chemical vapor deposition (CVD) process. It has a unique layered structure and high purity, making it ideal for various high-temperature applications.

PBN Sheet has excellent thermal and electrical properties, high thermal stability, and low coefficient of thermal expansion. It can withstand temperatures up to 1800°C in an inert atmosphere and up to 1400°C in air. Its high purity and low outgassing make it suitable for use in vacuum and cleanroom environments.

PBN Sheet can be machined to different shapes and sizes to meet specific requirements. It is commonly used in industries such as aerospace, semiconductor, and nuclear where high-temperature stability, electrical insulation, and purity are crucial. Applications of PBN Sheet include insulation components, crucibles, heating elements, and protective coatings.

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


PBN Sheet Properties

Compound Formula BN
Molecular Weight 24.82
Appearance White
Melting Point 2973 °C
Density 2.1 g/cm3 (h-BN); 3.45 g/cm3 (c-BN)
Solubility in H2O Insoluble
Refractive Index 1.8 (h-BN); 2.1 (c-BN)
Electrical Resistivity 13 to 15 10x Ω-m

PBN Sheet Applications

Boron Nitride ceramic from CG Material can withstand high temperature in 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:
– Crucibles for crystal growth
– Break rings for horizontal casting machine
– Insulators for high temperature furnace
– Electric insulators in vacuum system
– Feed through for high voltage equipment


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

View full details

Contact form