Eigenschaften
Allgemein
| Property | Value |
|---|---|
Dichte | 2.22 g/cm³ Show Supplier Material materials with Dichte of 2.22 g/cm³ |
Mechanisch
Thermisch
| Property | Temperature | Value | Testing Standard | Comment |
|---|---|---|---|---|
Glasübergangstemperatur | 440 °C Show Supplier Material materials with Glasübergangstemperatur of 440 °C | ISO 7884-8 | ||
Glühtemperatur | 465.0 °C Show Supplier Material materials with Glühtemperatur of 465.0 °C | ISO 7884-4 | Viscosity 10¹³ dPa·s | |
Koeffizient der thermischen Ausdehnung | 4.1e-06 1/K Show Supplier Material materials with Koeffizient der thermischen Ausdehnung of 4.1e-06 1/K | ISO 7991 | mean value for 20-300 °C | |
Softening temperature | 705.0 °C Show Supplier Material materials with Softening temperature of 705.0 °C | ISO 7884-3 | Viscosity 10⁷·⁶ dPa·s | |
Specific electrical resistance temperature | 315.0 °C Show Supplier Material materials with Specific electrical resistance temperature of 315.0 °C | For ρ=10⁸ Ω·cm | ||
Working temperature | 1085.0 °C Show Supplier Material materials with Working temperature of 1085.0 °C | ISO 7884-2 | Viscosity 10⁴ dPa·s | |
Wärmeleitfähigkeit | 90 °C | 1 W/(m·K) Show Supplier Material materials with Wärmeleitfähigkeit of 1 W/(m·K) |
Elektrisch
| Property | Temperature | Value | Frequency |
|---|---|---|---|
Dielektrizitätskonstante | 4.7 [-] Show Supplier Material materials with Dielektrizitätskonstante of 4.7 [-] | 1MHz | |
Verlustfaktor | 0.0022 [-] Show Supplier Material materials with Verlustfaktor of 0.0022 [-] | 1MHz | |
spezifischer Widerstand | 250 °C | 1.58e+07 Ω·m Show Supplier Material materials with spezifischer Widerstand of 1.58e+07 Ω·m | |
350 °C | 316228 Ω·m Show Supplier Material materials with spezifischer Widerstand of 316228 Ω·m |
Optisch
| Property | Value | Testing Standard | Comment |
|---|---|---|---|
Brechungsindex | 1.5 [-] Show Supplier Material materials with Brechungsindex of 1.5 [-] | at λ=587.6 nm | |
Stress optical coefficient | 4.1e-06 mm²/N Show Supplier Material materials with Stress optical coefficient of 4.1e-06 mm²/N | DIN 52314 |
Chemical properties
| Property | ||
|---|---|---|
Other | 0.01 % | max., Lead, Cadmium, Mercury and Hexavalent Chromium |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Electronic components (Opto discs). Transmitter and x-ray tubes, Photomultipliers, UV flame detectors/deuterium lamp, Lighting (Laser flash lamps, Purification/Germicidal UVC/UVB/UV-CCL lamps), Disinfection, Substrate Glass for wafer production. | |
| Corrosion properties | Hydrolytic resistance Class HGB3 (ISO 719) - Acid resistance Class S4 (DIN 12116) - Alkali resistance Class A3 (ISO695) | |