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Carbon-carbon vs. Grade 20 Titanium

Carbon-carbon and grade 20 titanium belong to fundamentally different material chemistries. Carbon-carbon is a ceramic material, while grade 20 titanium is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 13 material properties with values for both materials. Properties with values for just one material (20, 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 grade 20 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 95
120
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 36
47
Tensile Strength: Ultimate (UTS), MPa 19
900 to 1270

Thermal Properties

Maximum Temperature: Mechanical, °C 2400
370
Specific Heat Capacity, J/kg-K 760
520
Thermal Expansion, µm/m-K 4.0
9.6

Otherwise Unclassified Properties

Density, g/cm3 1.7
5.0

Common Calculations

Stiffness to Weight: Axial, points 31
14
Stiffness to Weight: Bending, points 89
33
Strength to Weight: Axial, points 3.0
50 to 70
Strength to Weight: Bending, points 9.1
41 to 52
Thermal Shock Resistance, points 3.5
55 to 77