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Carbon-carbon vs. Yttria

Carbon-carbon belongs to the non-oxide engineering ceramics classification, while yttria belongs to the oxide-based engineering ceramics. There are 10 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 carbon-carbon and the bottom bar is yttria.

Metric UnitsUS Customary Units

Material Properties

Compressive (Crushing) Strength, MPa 240
390
Density, g/cm3 1.7
5.0
Elastic (Young's, Tensile) Modulus, GPa 95
120
Maximum Temperature: Mechanical, °C 2400
2000
Specific Heat Capacity, J/kg-K 760
440
Stiffness to Weight: Axial, points 31
13
Stiffness to Weight: Bending, points 89
32
Thermal Conductivity, W/m-K 40
0.3
Thermal Diffusivity, mm2/s 31
0.14
Thermal Expansion, µm/m-K 4.0
8.0