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Cork vs. Hexagonal Boron Nitride

Cork and hexagonal boron nitride belong to fundamentally different material chemistries. Cork is a polymeric material, while hexagonal boron nitride is ceramic. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 10 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is cork and the bottom bar is hexagonal boron nitride.

Metric UnitsUS Customary Units

Material Properties

Compressive (Crushing) Strength, MPa 1.0
21 to 250
Density, g/cm3 0.15
1.9 to 2.1
Dielectric Strength (Breakdown Potential), kV/mm 1.5
61 to 200
Elastic (Young's, Tensile) Modulus, GPa 0.020
14 to 60
Specific Heat Capacity, J/kg-K 2000
840 to 1610
Stiffness to Weight: Axial, points 0.074
4.1 to 18
Stiffness to Weight: Bending, points 60
42 to 69
Thermal Conductivity, W/m-K 0.040
29 to 96
Thermal Diffusivity, mm2/s 0.13
9.9 to 34
Thermal Expansion, µm/m-K 200
0.54 to 18