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C-820 Magnesia Ceramic vs. Steatite

Both C-820 magnesia ceramic and steatite are oxide-based engineering ceramics. There are 12 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is C-820 magnesia ceramic and the bottom bar is steatite.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
68 to 120
Flexural Strength, MPa 53
32 to 150

Thermal Properties

Specific Heat Capacity, J/kg-K 950
850 to 860
Thermal Conductivity, W/m-K 8.0
1.8 to 2.5
Thermal Expansion, µm/m-K 11
7.0 to 9.0

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 10
6.0
Dielectric Constant (Relative Permittivity) At 1 MHz 9.6
5.7 to 6.5
Electrical Dissipation At 1 MHz 0.00030
0.0010 to 0.0060

Otherwise Unclassified Properties

Density, g/cm3 2.7
1.9 to 2.8

Common Calculations

Stiffness to Weight: Axial, points 21
14 to 32
Stiffness to Weight: Bending, points 58
52 to 83
Thermal Diffusivity, mm2/s 3.1
0.79 to 1.1