Properties
General
| Property | Value |
|---|---|
Density | 2.25 g/cm³ Show Supplier Material materials with Density of 2.25 g/cm³ |
Mechanical
Thermal
| Property | Temperature | Value | Testing Standard | Comment |
|---|---|---|---|---|
Annealing temperature | 560.0 °C Show Supplier Material materials with Annealing temperature of 560.0 °C | ISO 7884-4 | Viscosity 10¹³ dPa·s | |
Coefficient of thermal expansion | 3.9e-06 1/K Show Supplier Material materials with Coefficient of thermal expansion of 3.9e-06 1/K | ISO 7991 | mean value for 20-300 °C | |
Glass transition temperature | 525 °C Show Supplier Material materials with Glass transition temperature of 525 °C | ISO 7884-8 | ||
Softening temperature | 775.0 °C Show Supplier Material materials with Softening temperature of 775.0 °C | ISO 7884-3 | Viscosity 10⁷·⁶ dPa·s | |
Specific electrical resistance temperature | 300.0 °C Show Supplier Material materials with Specific electrical resistance temperature of 300.0 °C | For ρ=10⁸ Ω·cm | ||
Thermal conductivity | 90 °C | 1.2 W/(m·K) Show Supplier Material materials with Thermal conductivity of 1.2 W/(m·K) | ||
Working temperature | 1135.0 °C Show Supplier Material materials with Working temperature of 1135.0 °C | ISO 7884-2 | Viscosity 10⁴ dPa·s |
Electrical
| Property | Temperature | Value | Frequency |
|---|---|---|---|
Dielectric constant | 4.9 [-] Show Supplier Material materials with Dielectric constant of 4.9 [-] | 1MHz | |
Electrical resistivity | 250 °C | 2e+06 Ω·m Show Supplier Material materials with Electrical resistivity of 2e+06 Ω·m | |
350 °C | 79433 Ω·m Show Supplier Material materials with Electrical resistivity of 79433 Ω·m | ||
Loss tangent | 0.0036 [-] Show Supplier Material materials with Loss tangent of 0.0036 [-] | 1MHz |
Optical
| Property | Value | Testing Standard | Comment |
|---|---|---|---|
Refractive index | 1.5 [-] Show Supplier Material materials with Refractive index of 1.5 [-] | at λ=587.6 nm | |
Stress optical coefficient | 3.6e-06 mm²/N Show Supplier Material materials with Stress optical coefficient of 3.6e-06 mm²/N | DIN 52314 |
Chemical properties
| Property | ||
|---|---|---|
Other | 0.01 % | max., Lead, Cadmium, Mercury and Hexavalent Chromium |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Engineering (Instruments / Barometers / Aerometers / Sightglasses), Electronic components, Lighting (Neon tubing, Flash lamps, Lamp bulbs, Exhust and Plate tubing, Laser flash lamps, other Lamps and Luminary). Camera- and Video components, Digital projection, Photodynamic therapy | |
| Corrosion properties | Hydrolytic resistance Class HGB4 (ISO 719) - Acid resistance Class S3 (DIN 12116) - Alkali resistance Class A3 (ISO695) | |