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C-820 Magnesia Ceramic vs. Beryllia

Both C-820 magnesia ceramic and beryllia are oxide-based engineering ceramics. There are 11 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 beryllia.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
350
Flexural Strength, MPa 53
240

Thermal Properties

Specific Heat Capacity, J/kg-K 950
1050
Thermal Conductivity, W/m-K 8.0
270
Thermal Expansion, µm/m-K 11
8.0

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 9.6
6.6
Electrical Dissipation At 1 MHz 0.00030
0.00060

Otherwise Unclassified Properties

Density, g/cm3 2.7
2.9

Common Calculations

Stiffness to Weight: Axial, points 21
67
Stiffness to Weight: Bending, points 58
82
Thermal Diffusivity, mm2/s 3.1
89