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Alumina vs. Ceria

Both alumina and ceria are oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (16, 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 alumina and the bottom bar is ceria.

Metric UnitsUS Customary Units

Material Properties

Compressive (Crushing) Strength, MPa 1920 to 2750
590
Density, g/cm3 3.4 to 4.1
7.6
Elastic (Young's, Tensile) Modulus, GPa 220 to 370
180
Electrical Resistivity Order of Magnitude, 10x Ω-m 6.2 to 14
4.0
Maximum Temperature: Mechanical, °C 650 to 1730
1900
Melting Onset (Solidus), °C 2040
2340
Specific Heat Capacity, J/kg-K 870 to 940
390
Stiffness to Weight: Axial, points 35 to 53
13
Stiffness to Weight: Bending, points 57 to 62
25
Thermal Expansion, µm/m-K 6.7 to 8.2
11