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General Alkaline Earth Borosilicate Glass

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Description

Alkaline Earth Borosilicate Glass is both highly chemically and thermally resistant. Typically, it is softer than non alkaline earth borosilicate glass.

Properties

Electrical

Dielectric constant εr

5.1 - 6.3 [-] at 20 °C

at 1MHz

Loss tangent tanδ

1.5E-3 - 0.01 [-] at 20 °C

at 1MHz

General

Density ρ

2.3 - 2.4 g/cm³ at 20 °C

Mechanical

Elastic modulus E

60 - 70 GPa at 20 °C

Poisson's ratio ν

0.19 - 0.22 [-] at 20 °C

Thermal

Annealing temperature Tanneal

480 - 570 °C

Coefficient of thermal expansion α

4.3E-6 - 5.4E-6 1/K at 300 °C

Vicat softening temperature Tsoft

710 - 800 °C