Menu (ESC)

Silica Aerogel vs. Zirconia

Both silica aerogel and zirconia are oxide-based engineering ceramics. There are 11 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 zirconia.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.0050
190 to 200
Poisson's Ratio 0.2
0.25 to 0.29
Tensile Strength: Ultimate (UTS), MPa 0.016
410 to 450

Thermal Properties

Thermal Conductivity, W/m-K 0.016
2.2 to 4.3
Thermal Expansion, µm/m-K 2.0
8.8 to 9.5

Otherwise Unclassified Properties

Density, g/cm3 0.1
5.7 to 6.0

Common Calculations

Stiffness to Weight: Axial, points 0.028
Stiffness to Weight: Bending, points 57
33 to 34
Strength to Weight: Axial, points 0.044
19 to 22
Strength to Weight: Bending, points 1.4
21 to 23
Thermal Shock Resistance, points 110
15 to 19