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Description

Boron nitride is a chemical compound with equal numbers of boron and nitrogen atoms. The cubic (CBN) variety analogous to diamond has high hardness which is inferior only to diamond.

Properties

General

Density ρ

3.45 g/cm³ at 20 °C

Mechanical

Elastic modulus E

20 - 100 GPa at 20 °C

Flexural strength σbend

110 MPa at 20 °C

Hardness, Mohs HM

9.5 - 10 [-] at 20 °C

Tensile strength Rm

27 - 83 MPa at 20 °C

Yield strength YS

27 - 83 MPa at 20 °C

Chemical properties

Element

Weight %

Comment

N

50 - 58.3 %

B

40 - 41.9 %

O

0.3 - 3 %

Ca

0.2 - 2 %

Other

0.2 - 0.3 %

Chloride, Iron, Aluminum, Silicon

This material data has been provided by Advanced Ceramic Materials.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.