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Engineering Porcelain vs. C-820 Magnesia Ceramic

Both engineering porcelain and C-820 magnesia ceramic are oxide-based engineering ceramics. There are 12 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67 to 150
100
Flexural Strength, MPa 43 to 160
53

Thermal Properties

Specific Heat Capacity, J/kg-K 600 to 1000
950
Thermal Conductivity, W/m-K 1.8 to 6.5
8.0
Thermal Expansion, µm/m-K 2.0 to 6.6
11

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 5.0 to 10
10
Dielectric Constant (Relative Permittivity) At 1 MHz 6.5
9.6
Electrical Dissipation At 1 MHz 0.00043 to 0.013
0.00030

Otherwise Unclassified Properties

Density, g/cm3 2.3 to 3.0
2.7

Common Calculations

Stiffness to Weight: Axial, points 16 to 29
21
Stiffness to Weight: Bending, points 49 to 65
58
Thermal Diffusivity, mm2/s 0.73 to 3.9
3.1