Borosilicate Glass SCHOTT 8230

Alternative and trade names
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Intermediate sealing glass for sealing to Glass 8229 and Glass 8330 with high resistance to thermal shock.

This material data has been provided by Schott Glass Tubing.

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





2.19 g/cm³

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PropertyValueTesting StandardComment

Annealing temperature

590.0 °C

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ISO 7884-4

Viscosity 10¹³ dPa·s

Coefficient of thermal expansion

2.7e-06 1/K

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ISO 7991

mean value for 20-300 °C

Glass transition temperature

570 °C

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ISO 7884-8

Softening temperature

915.0 °C

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ISO 7884-3

Viscosity 10⁷·⁶ dPa·s

Specific electrical resistance temperature

255.0 °C

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For ρ=10⁸ Ω·cm

Working temperature

1425.0 °C

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ISO 7884-2

Viscosity 10⁴ dPa·s

Chemical properties



0.01 %

max., Lead, Cadmium, Mercury and Hexavalent Chromium

Technological properties

Application areas

For use in electrotechnology (Signal intensifier, Detector) and lighting (Flash lights), Camera- and Video components, Digital projection, Photodynamic Therapy, Beauty and Cosmetics