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Carbon-carbon vs. Cork

Carbon-carbon and cork belong to fundamentally different material chemistries. Carbon-carbon is a ceramic material, while cork is polymeric. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 14 material properties with values for both materials. Properties with values for just one material (8, 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 carbon-carbon and the bottom bar is cork.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 240
1.0
Elastic (Young's, Tensile) Modulus, GPa 95
0.020
Shear Modulus, GPa 36
0.010
Tensile Strength: Ultimate (UTS), MPa 19
0.85

Thermal Properties

Specific Heat Capacity, J/kg-K 760
2000
Thermal Conductivity, W/m-K 40
0.040
Thermal Expansion, µm/m-K 4.0
200

Otherwise Unclassified Properties

Density, g/cm3 1.7
0.15

Common Calculations

Stiffness to Weight: Axial, points 31
0.074
Stiffness to Weight: Bending, points 89
60
Strength to Weight: Axial, points 3.0
1.6
Strength to Weight: Bending, points 9.1
13
Thermal Diffusivity, mm2/s 31
0.13
Thermal Shock Resistance, points 3.5
16