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Carbon-carbon vs. Hardwood

Carbon-carbon and hardwood belong to fundamentally different material chemistries. Carbon-carbon is a ceramic material, while hardwood is polymeric. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 15 material properties with values for both materials. Properties with values for just one material (7, 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 hardwood.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 240
40
Elastic (Young's, Tensile) Modulus, GPa 95
12
Poisson's Ratio 0.32
0.37
Shear Modulus, GPa 36
0.9
Tensile Strength: Ultimate (UTS), MPa 19
80

Thermal Properties

Specific Heat Capacity, J/kg-K 760
1260
Thermal Conductivity, W/m-K 40
0.16
Thermal Expansion, µm/m-K 4.0
6.0

Otherwise Unclassified Properties

Density, g/cm3 1.7
0.7

Common Calculations

Stiffness to Weight: Axial, points 31
9.5
Stiffness to Weight: Bending, points 89
110
Strength to Weight: Axial, points 3.0
32
Strength to Weight: Bending, points 9.1
59
Thermal Diffusivity, mm2/s 31
0.18
Thermal Shock Resistance, points 3.5
79