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Cork vs. Aluminum Nitride

Cork and aluminum nitride belong to fundamentally different material chemistries. Cork is a polymeric material, while aluminum 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 (16, 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 aluminum nitride.

Metric UnitsUS Customary Units

Material Properties

Compressive (Crushing) Strength, MPa 1.0
2100
Density, g/cm3 0.15
2.9 to 3.3
Dielectric Strength (Breakdown Potential), kV/mm 1.5
15 to 56
Elastic (Young's, Tensile) Modulus, GPa 0.020
330
Specific Heat Capacity, J/kg-K 2000
780
Stiffness to Weight: Axial, points 0.074
55 to 63
Stiffness to Weight: Bending, points 60
69 to 80
Thermal Conductivity, W/m-K 0.040
80 to 190
Thermal Diffusivity, mm2/s 0.13
31 to 74
Thermal Expansion, µm/m-K 200
4.2 to 5.4