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Mullite vs. Barium Fluoride

Mullite belongs to the oxide-based engineering ceramics classification, while barium fluoride belongs to the non-glass optical ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is mullite and the bottom bar is barium fluoride.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.7 to 3.0
4.9
Elastic (Young's, Tensile) Modulus, GPa 110 to 170
60
Knoop Hardness 750
80
Poisson's Ratio 0.25
0.32
Specific Heat Capacity, J/kg-K 950
420
Stiffness to Weight: Axial, points 22 to 31
6.8
Stiffness to Weight: Bending, points 58 to 62
27
Thermal Conductivity, W/m-K 3.5 to 11
9.0
Thermal Diffusivity, mm2/s 1.4 to 3.7
4.4
Thermal Expansion, µm/m-K 5.8
18