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Cork vs. Low Expansion Glass-ceramic

Cork and low expansion glass-ceramic belong to fundamentally different material chemistries. Cork is a polymeric material, while low expansion glass-ceramic is ceramic. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 12 material properties with values for both materials. Properties with values for just one material (12, 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 low expansion glass-ceramic.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.020
83
Tensile Strength: Ultimate (UTS), MPa 0.85
53

Thermal Properties

Specific Heat Capacity, J/kg-K 2000
800
Thermal Conductivity, W/m-K 0.040
1.5
Thermal Expansion, µm/m-K 200
1.7

Otherwise Unclassified Properties

Density, g/cm3 0.15
2.4

Common Calculations

Stiffness to Weight: Axial, points 0.074
19
Stiffness to Weight: Bending, points 60
59
Strength to Weight: Axial, points 1.6
6.1
Strength to Weight: Bending, points 13
13
Thermal Diffusivity, mm2/s 0.13
0.76
Thermal Shock Resistance, points 16
28