MakeItFrom.com
Menu (ESC)

CVD Diamond vs. Beryllia

CVD diamond belongs to the non-oxide engineering ceramics classification, while beryllia belongs to the oxide-based engineering ceramics. There are 16 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is CVD diamond and the bottom bar is beryllia.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 1050
350
Poisson's Ratio 0.1
0.26
Tensile Strength: Ultimate (UTS), MPa 750
140

Thermal Properties

Specific Heat Capacity, J/kg-K 500
1050
Thermal Conductivity, W/m-K 1900
270
Thermal Expansion, µm/m-K 1.0
8.0

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 5.7
6.6
Electrical Dissipation At 1 MHz 0.00020
0.00060
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
13

Otherwise Unclassified Properties

Density, g/cm3 3.5
2.9

Common Calculations

Stiffness to Weight: Axial, points 170
67
Stiffness to Weight: Bending, points 96
82
Strength to Weight: Axial, points 59
14
Strength to Weight: Bending, points 52
21
Thermal Diffusivity, mm2/s 1080
89
Thermal Shock Resistance, points 51
3.6