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Carbon-carbon vs. Class 1 Tungsten

Carbon-carbon and class 1 tungsten belong to fundamentally different material chemistries. Carbon-carbon is a ceramic material, while class 1 tungsten is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 16 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 carbon-carbon and the bottom bar is class 1 tungsten.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 95
250
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 36
98
Tensile Strength: Ultimate (UTS), MPa 19
860

Thermal Properties

Specific Heat Capacity, J/kg-K 760
120
Thermal Conductivity, W/m-K 40
21
Thermal Expansion, µm/m-K 4.0
5.1

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 0.090
12
Electrical Conductivity: Equal Weight (Specific), % IACS 0.48
7.4

Otherwise Unclassified Properties

Density, g/cm3 1.7
15

Common Calculations

Stiffness to Weight: Axial, points 31
9.6
Stiffness to Weight: Bending, points 89
14
Strength to Weight: Axial, points 3.0
16
Strength to Weight: Bending, points 9.1
14
Thermal Diffusivity, mm2/s 31
12
Thermal Shock Resistance, points 3.5
48