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Forsterite vs. Infrared Transmitting Glass

Forsterite belongs to the oxide-based engineering ceramics classification, while infrared transmitting glass belongs to the glass and glass-ceramics. There are 6 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is forsterite and the bottom bar is infrared transmitting glass.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.1 to 3.1
4.4 to 4.8
Flexural Strength, MPa 40 to 160
20 to 79
Specific Heat Capacity, J/kg-K 850
360 to 430
Thermal Conductivity, W/m-K 1.7 to 3.5
0.0060 to 0.23
Thermal Diffusivity, mm2/s 0.94 to 1.3
0.0029 to 0.14
Thermal Expansion, µm/m-K 9.0 to 10
9.0 to 17