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Zirconia vs. C-820 Magnesia Ceramic

Both zirconia and C-820 magnesia ceramic 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 zirconia and the bottom bar is C-820 magnesia ceramic.

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

Material Properties

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