Borosilicate Glass RayVolution® L 41

Alternative and trade names
RayVolution® L 41
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Description

Schott RayVolution® L 41 is a highly UV-transmissive borosilicate glass for deep UV applications.

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.

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Properties

General

PropertyValue

Density

2.22 g/cm³

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Mechanical

PropertyValue

Elastic modulus

51 GPa

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Poisson's ratio

0.22 [-]

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Thermal

PropertyTemperatureValueTesting StandardComment

Annealing temperature

465.0 °C

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ISO 7884-4

Viscosity 10¹³ dPa·s

Coefficient of thermal expansion

4.1e-06 1/K

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ISO 7991

mean value for 20-300 °C

Glass transition temperature

440 °C

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ISO 7884-8

Softening temperature

705.0 °C

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ISO 7884-3

Viscosity 10⁷·⁶ dPa·s

Thermal conductivity

90 °C

1 W/(m·K)

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Working temperature

1085.0 °C

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ISO 7884-2

Viscosity 10⁴ dPa·s

Electrical

PropertyTemperatureValueFrequency

Dielectric constant

4.7 [-]

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1MHz

Electrical resistivity

250 °C

1.58e+07 Ω·m

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350 °C

316228 Ω·m

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Loss tangent

0.0022 [-]

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1MHz

Optical

PropertyValueTesting StandardComment

Refractive index

1.5 [-]

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at λ=587.6 nm

Stress optical coefficient

4.1e-06 mm²/N

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DIN 52314

UV transmission

80 %

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min. | Thickness=1 mm | λ=587.6 nm

Chemical properties

Property

Other

0.01 %

max., Lead, Cadmium, Mercury and Hexavalent Chromium

Technological properties

Property
Application areas

UV-transmissive borosilicate glass for deep UV applications

Corrosion properties

Hydrolytic resistance Class HGB3 (ISO 719) - Acid resistance Class S4 (DIN 12116) - Alkali resistance Class A3 (ISO695)