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Cork vs. Potassium Bromide

Cork and potassium bromide belong to fundamentally different material chemistries. Cork is a polymeric material, while potassium bromide is ceramic. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 9 material properties with values for both materials. Properties with values for just one material (13, 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 potassium bromide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 0.15
2.8
Elastic (Young's, Tensile) Modulus, GPa 0.020
24
Shear Modulus, GPa 0.010
7.0
Specific Heat Capacity, J/kg-K 2000
450
Stiffness to Weight: Axial, points 0.074
4.7
Stiffness to Weight: Bending, points 60
35
Thermal Conductivity, W/m-K 0.040
4.8
Thermal Diffusivity, mm2/s 0.13
3.9
Thermal Expansion, µm/m-K 200
39