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C-820 Magnesia Ceramic vs. Hafnia

Both C-820 magnesia ceramic and hafnia are oxide-based engineering ceramics. There are 8 material properties with values for both materials. Properties with values for just one material (7, 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 C-820 magnesia ceramic and the bottom bar is hafnia.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.7
9.7
Elastic (Young's, Tensile) Modulus, GPa 100
57
Specific Heat Capacity, J/kg-K 950
120
Stiffness to Weight: Axial, points 21
3.3
Stiffness to Weight: Bending, points 58
13
Thermal Conductivity, W/m-K 8.0
1.1
Thermal Diffusivity, mm2/s 3.1
0.95
Thermal Expansion, µm/m-K 11
6.0