Borosilicate Glass Tubing and Rod SCHOTT 8449

Alternative and trade names
SCHOTT 8449
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Description

Intermediate sealing glass to the glasses FIOLAX® clear, 8412, 8447 and 8487.

This material data has been provided by Schott Glass Tubing.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
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.

Ashby charts

Properties

General

PropertyValue

Density

2.29 g/cm³

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Thermal

PropertyValueTesting StandardComment

Annealing temperature

550.0 °C

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ISO 7884-4

Viscosity 10¹³ dPa·s

Coefficient of thermal expansion

4.5e-06 1/K

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ISO 7991

mean value for 20-300 °C

Glass transition temperature

535 °C

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ISO 7884-8

Softening temperature

785.0 °C

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ISO 7884-3

Viscosity 10⁷·⁶ dPa·s

Specific electrical resistance temperature

350.0 °C

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For ρ=10⁸ Ω·cm

Working temperature

1150.0 °C

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ISO 7884-2

Viscosity 10⁴ dPa·s

Optical

PropertyValueComment

Refractive index

1.5 [-]

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at λ=587.6 nm

Technological properties

Property
Application areas

Transmitter and x-ray tubes, other Electrotechnology/Electronics