Tungsten sealing glass. Low melting passivation glass wit high hydrolytic resistance.
See where Lead Glass SCHOTT 8652 falls on the material property chart for Density against Elastic modulus in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.
3.18 g/cm³ at 20 °C
Viscosity 10¹³ dPa.s (ISO 7884-4)
Coefficient of thermal expansionα
4.5E-6 1/K at 20 °C
mean value for 20-300 °C - ISO 7991
Glass transition temperatureTg
Viscosity 10⁷·⁶ dPa.s (ISO 7884-3)
0.9 W/(m·K) at 90 °C
Viscosity 10⁴ dPa.s (ISO 7884-2)
Dielectric constant, 1MHzεr,1MHz
6.9 [-] at 20 °C
Loss tangent, 1MHztanδ1,MHz
3.5E-3 [-] at 20 °C
at λ=587.6 nm
Stress optical coefficientk
For power and pin diodes as well as microdiodes, Signal intensifier, detector (other Electrotechnology/Electronics), Sensors
Hydrolytic resistance Class HGB1 (ISO 719) - Acid resistance Class S4 (DIN 12116) - Alkali resistance Class A3 (ISO695)
This material data has been provided by Schott Glass Tubing.