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Boron Nitride Sheet

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Commodity: Ceramics Material: Boron Nitride Form: Foil/Film/Sheet Composition: BN CAS Number: 10043-11-5
Boron Nitride Sheet delivers a unique combination of high thermal conductivity, exceptional electrical insulation, and stability in chemically aggressive and high-temperature environments. Structurally similar to graphite but electrically insulating, it retains strength and lubricity up to elevated temperatures, making it ideal for demanding engineering settings. Its applications span electronics manufacturing, aerospace, and high-performance thermal management systems. Specific uses include dielectric substrates for high-power semiconductor devices, precision thermal interface layers in spacecraft systems, and protective liners in molten metal handling. Research into boron nitride sheets, particularly at the nanoscale, continues to reveal enhanced mechanical and optical properties, enabling innovations in nanocomposites, deep-UV optoelectronics, and advanced protective coatings. In both scientific exploration and industrial deployment, the versatility and performance of boron nitride sheets secure their role as a high-value material for extreme-condition applications.
Starting at $262.00 each
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Material Properties

Chemical Resistance
Element Value
Acids - concentrated Fair
Acids - dilute Fair
Alkalis Fair
Halogens Poor
Metals Good
Electrical Properties
Element Value
Dielectric constant 4.3
Dielectric strength( kV mm⁻¹ ) 40-200
Volume resistivity( Ohmcm ) 10¹¹-10¹⁴@25
Physical Properties
Element Value
Apparent porosity( % ) 2-15
Density( gcm⁻³ ) 1.9-2.2
Thermal Properties
Element Value
Sublimation point( C ) 2600-2800
Upper continuous use temperature( C ) 950-2500
Specific heat( J K⁻¹ kg⁻¹ ) 800-2000@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 15-50@20°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 1-36@20-1000°C
Mechanical Properties
Element Value
Tensile modulus( GPa ) 20-35
Shear strength( MPa ) Dec-25
Pultrusions
Element Value
Compressive strength( MPa ) 30-120
each

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Available Configurations

Properties common to all products in this list

Commodity: Ceramics Material: Boron Nitride Form: Foil/Film/Sheet Composition: BN CAS Number: 10043-11-5

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Tolerances

Foil/Film/Sheet
Thickness ±20%
Linear dimension <100mm ±1mm
Linear dimension >=100mm +2 / -1%