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Silica Aerogel vs. C-820 Magnesia Ceramic

Both silica aerogel and C-820 magnesia ceramic are oxide-based engineering ceramics. There are 6 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 silica aerogel and the bottom bar is C-820 magnesia ceramic.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 0.1
2.7
Elastic (Young's, Tensile) Modulus, GPa 0.0050
100
Stiffness to Weight: Axial, points 0.028
21
Stiffness to Weight: Bending, points 57
58
Thermal Conductivity, W/m-K 0.016
8.0
Thermal Expansion, µm/m-K 2.0
11