Technical Information Boron Nitride Products

Why choose Boron Nitride products?

Boron Nitride products exhibit a unique combination of chemical, electrical, mechanical and thermal properties, making it suitable for a wide range of high-performance industrial applications.

Some unique features that Boron Nitride product can bring are:

  • Easily machinable to desired shapes and size.
  • High temperature resistance.
  • Low thermal expansion and excellent thermal shock resistance.
  • Outstanding electrical insulation properties even at high temperatures.
  • High wet resistance to molten metals, slags and glass.
  • Transparent to Microwaves.
  • High thermal conductivity.

Boron Nitride are used widely in industries such as steel and foundry industry, high-temperature furnace manufacturing, microelectronics, solar and photovoltaic industry, amorphous strip construction and semiconductor industry.

What are the engineering properties of your Boron Nitride products?

Below are material properties of different grades of Boron Nitride products that we carry.


Boron Nitride, BN-A

Grade BN-A
Chemical Structure (BN%) % 99
Other Components no
Density g/cm3 >2
Hardness HL 300
Flexural Strength Mpa 35
Coefficient of Thermal Expansion (25°C ~ 1200°C) (10-6/K) -1~2.5
Thermal Conductivity at 20°C W/mk 50
MAX-Temperature of use Oxidizing 900°C
Vacuum 1800°C
Inert 2200°C
RT Resistivity Ω.cm >1014

Boron Nitride, BN-B

Grade BN-B
Chemical Structure (BN%) % 99
Other Components no
Density g/cm3 2.15
Hardness HL 450
Flexural Strength Mpa 95
Coefficient of Thermal Expansion (25°C ~ 1200°C) (10-6/K) 1~2
Thermal Conductivity at 20°C W/mk 35
MAX-Temperature of use Oxidizing 900°C
Vacuum 1600°C
Inert 1800°C
RT Resistivity Ω.cm >1014

Boron Nitride, BN-E/L/S

Grade BN-E BN-L BN-S
Main Ingredients BN+ZrO2+SiC BN+ALN BN+Si3N4
Density g/cm3 2.3 g/cm3 2.85 g/cm3 2.7
Hardness HL 600 HL 650 HL 650
Flexural Strength Mpa 150 Mpa 250 Mpa 300
Coefficient of Thermal Expansion (25°C ~ 1200°C) (10-6/K) 2~3 (10-6/K) 4~6 (10-6/K) 2~3
Thermal Conductivity at 20°C W/mk 15 W/mk 70 W/mk 45
MAX-Temperature of use Oxidizing 900°C Oxidizing 900°C Oxidizing 900°C
Vacuum 1500°C
Inert 1700°C Inert Inert
RT Resistivity Ω.cm >1012 Ω.cm >1014 Ω.cm >1014

Boron Nitride, BN-T

The Typical Characteristics BN-T
Chemical Composition BN+TiB2+AIN
Density g/cm3 >3.01
Modulus of Elasticity Gpa 60~70
Flexural Strength Mpa >150
Coefficient of Thermal Expansion (25°C ~ 1200°C) (10-6/K) 4~6
Thermal Conductivity at 20°C W/mk 100/40
MAX-Temperature of use Oxidizing 900°C
Vacuum 1700°C
Inert 2000°C
RT Resistivity Ω.cm 300~2000

What should I pay attention to when I use Boron Nitride products?

  • Keep BN products in vacuum package before usage.
  • After vacuum package is removed, store BN products in dry and cool environment. Keep container tightly closed while not in use.
  • BN products are brittle. Please handle with care.

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