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C-820 Magnesia Ceramic vs. Zirconia

Both C-820 magnesia ceramic and zirconia are oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (14, 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 zirconia.

Porous Magnesia Ceramic (IEC 60672 Type C-820)Zirconia (Zirconium Dioxide, ZrO2)
Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.7
5.7 to 6.0
Dielectric Constant (Relative Permittivity) At 1 MHz 9.6
28
Elastic (Young's, Tensile) Modulus, GPa 100
190 to 200
Flexural Strength, MPa 53
630 to 970
Specific Heat Capacity, J/kg-K 950
400 to 510
Stiffness to Weight: Axial, points 21
19
Stiffness to Weight: Bending, points 58
33 to 34
Thermal Conductivity, W/m-K 8.0
2.2 to 4.3
Thermal Diffusivity, mm2/s 3.1
0.73 to 1.8
Thermal Expansion, µm/m-K 11
8.8 to 9.5