General Aluminosilicate Glass

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Description

Aluminosilicate glass combines high chemical resistance with high operating temperatures. However, it is more difficult to manufacture compared to borosilicate glass.

This material data has been provided by Matmatch.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyValueTemperature

Density

2.4 - 2.7 g/cm³

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20.0 °C

Mechanical

PropertyValueTemperature

Elastic modulus

70 - 80 GPa

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20.0 °C

Hardness, Knoop, HK2

500 - 640 [-]

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20.0 °C

Hardness, Vickers

480 - 670 [-]

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20.0 °C

Poisson's ratio

0.2 [-]

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20.0 °C

Shear modulus

26 - 31.7 GPa

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20.0 °C

Thermal

PropertyValueTemperature

Annealing temperature

610 - 800 °C

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Coefficient of thermal expansion

3.38E-6 - 9.8E-6 1/K

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300.0 °C

Glass transition temperature

620 - 790 °C

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Thermal conductivity

0.91 - 1.1 W/(m·K)

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20.0 °C

Vicat softening temperature

820 - 1010 °C

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Electrical

PropertyValueTemperatureComment

Dielectric constant

6.1 - 7.7 [-]

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20.0 °C

at 1MHz

Electrical resistivity

0.13 - 0.14 Ω·m

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20.0 °C

Loss tangent

0 - 0.01 [-]

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20.0 °C

at 1MHz

Optical

PropertyValue

Refractive index

1.49 - 1.55 [-]

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