Lead Glass SCHOTT 8095

Alternative and trade names
SCHOTT 8095
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Description

Sealing glasses in general with 28% PbO, electrically highly insulating and highly x-ray absorbing.

Ashby charts

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Properties

General

Density

ρ

3.01 g/cm³ at 20 °C

Mechanical

Elastic modulus

E

60 GPa at 20 °C

Show Lead Glass materials with Elastic modulus of 60 GPa at 20 °C

Poisson's ratio

ν

0.22 [-] at 20 °C

Show Lead Glass materials with Poisson's ratio of 0.22 [-] at 20 °C

Thermal

Annealing temperature

Tanneal

435 °C

Viscosity 10¹³ dPa.s (ISO 7884-4)

Coefficient of thermal expansion

α

9.1E-6 1/K at 20 °C

mean value for 20-300 °C - ISO 7991

Glass transition temperature

Tg

430 °C

ISO 7884-8

Softening temperature

Tsoftening

630 °C

Viscosity 10⁷·⁶ dPa.s (ISO 7884-3)

Specific electrical resistance temperature

Tk

330 °C

For ρ = 10⁸ Ω·cm

Thermal conductivity

λ

0.9 W/(m·K) at 90 °C

Working temperature

Tworking

982 °C

Viscosity 10⁴ dPa.s (ISO 7884-2)

Electrical

Dielectric constant, 1MHz

εr,1MHz

6.6 [-] at 20 °C

Electrical resistivity

ρel

3.98E+7 Ω·m at 250 °C

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Loss tangent, 1MHz

tanδ1,MHz

1.1E-3 [-] at 20 °C

Optical

Refractive index

nd

1.56 [-]

at λ=587.6 nm

Stress optical coefficient

k

3.1E-6 mm²/N

DIN 52314

Technological properties

Application areas

General electrotechnical application and electrotechnology (Signal intensifier, Detector and (fibre-) optics), Endoscopy.

Corrosion properties

Hydrolytic resistance Class HGB3 (ISO 719) - Acid resistance Class S2 (DIN 12116) - Alkali resistance Class A3 (ISO695)

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.