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Borosilicate Glass vs. Alumina-lime-silica Glass

Both borosilicate glass and alumina-lime-silica glass are glass and glass-ceramics. There are 11 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 borosilicate glass and the bottom bar is alumina-lime-silica glass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67 to 80
90
Flexural Strength, MPa 34 to 69
46

Thermal Properties

Thermal Expansion, µm/m-K 3.3 to 5.1
4.3

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 4.8 to 5.5
6.5
Dielectric Strength (Breakdown Potential), kV/mm 5.0 to 34
34
Electrical Dissipation At 1 Hz 0.0026 to 0.018
0.0022
Electrical Dissipation At 1 MHz 0.0017 to 0.0088
0.0026
Electrical Resistivity Order of Magnitude, 10x Ω-m 9.0 to 12
12

Otherwise Unclassified Properties

Density, g/cm3 2.2 to 2.6
2.8

Common Calculations

Stiffness to Weight: Axial, points 15 to 17
18
Stiffness to Weight: Bending, points 55 to 61
53