General Non Alkaline Earth Borosilicate Glass

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Description

Non Alkaline Earth Borosilicate Glass is chemically durable and has the lowest thermal expansion coefficient in the group of commercial glasses. Thus, it is the gass to use when good thermal resistance, high chemical durability and high light transmission are key. This glass type is also referred to as borosilicate glass 3.3.

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

PropertyTemperatureValue

Density

23.0 °C

2.2 - 2.8 g/cm³

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Mechanical

PropertyTemperatureValue

Elastic modulus

23.0 °C

63 - 64 GPa

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Poisson's ratio

23.0 °C

0.2 [-]

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Thermal

PropertyTemperatureValue

Annealing temperature

560 - 640 °C

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Coefficient of thermal expansion

300.0 °C

3.25E-6 - 4.6E-6 1/K

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Glass transition temperature

525 - 530 °C

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Vicat softening temperature

820 - 840 °C

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Electrical

PropertyTemperatureValueComment

Dielectric constant

23.0 °C

4.6 - 5.8 [-]

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at 1MHz

Loss tangent

23.0 °C

1E-3 - 3.7E-3 [-]

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at 1MHz

Optical

PropertyValue

Refractive index

1.47 [-]

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