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Baria-alkali-silica Glass vs. Mullite

Baria-alkali-silica glass belongs to the glass and glass-ceramics classification, while mullite belongs to the oxide-based engineering ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is baria-alkali-silica glass and the bottom bar is mullite.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 3.0
2.7 to 3.0
Dielectric Constant (Relative Permittivity) At 1 Hz 7.0
Elastic (Young's, Tensile) Modulus, GPa 80
110 to 170
Electrical Dissipation At 1 MHz 0.0022
Electrical Resistivity Order of Magnitude, 10x Ω-m 12
10 to 11
Flexural Strength, MPa 34
130 to 160
Stiffness to Weight: Axial, points 15
22 to 31
Stiffness to Weight: Bending, points 48
58 to 62
Thermal Expansion, µm/m-K 9.5