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Infrared Transmitting Glass vs. C-820 Magnesia Ceramic

Infrared transmitting glass belongs to the glass and glass-ceramics classification, while C-820 magnesia ceramic belongs to the oxide-based engineering ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

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

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 4.4 to 4.8
2.7
Elastic (Young's, Tensile) Modulus, GPa 18 to 63
100
Flexural Strength, MPa 20 to 79
53
Specific Heat Capacity, J/kg-K 360 to 430
950
Stiffness to Weight: Axial, points 2.3 to 7.3
21
Stiffness to Weight: Bending, points 20 to 28
58
Thermal Conductivity, W/m-K 0.0060 to 0.23
8.0
Thermal Diffusivity, mm2/s 0.0029 to 0.14
3.1
Thermal Expansion, µm/m-K 9.0 to 17
11