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Baria-alkali-silica Glass vs. Lead-alkali-silica Glass

Both baria-alkali-silica glass and lead-alkali-silica glass are glass and glass-ceramics.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 80
67
Flexural Strength, MPa 34
34

Thermal Properties

Glass Transition Temperature, °C 470
450
Thermal Expansion, µm/m-K 9.5
9.0

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 7.0
7.0
Electrical Dissipation At 1 Hz 0.0034
0.0024
Electrical Dissipation At 1 MHz 0.0022
0.0018
Electrical Resistivity Order of Magnitude, 10x Ω-m 12
12

Otherwise Unclassified Properties

Density, g/cm3 3.0
3.1

Common Calculations

Stiffness to Weight: Axial, points 15
12
Stiffness to Weight: Bending, points 48
43