Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 2.67 g/cm³ Show Supplier Material materials with Density of 2.67 g/cm³ |
Mechanical
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Annealing temperature | 795 °C Show Supplier Material materials with Annealing temperature of 795 °C | Viscosity 10¹³ dPa.s (ISO 7884-4) | |
Coefficient of thermal expansion | 23.0 °C | 4.7E-6 1/K Show Supplier Material materials with Coefficient of thermal expansion of 4.7E-6 1/K | mean value for 20-300 °C - ISO 7991 |
Glass transition temperature | 790 °C Show Supplier Material materials with Glass transition temperature of 790 °C | ISO 7884-8 | |
Softening temperature | 1005 °C Show Supplier Material materials with Softening temperature of 1005 °C | Viscosity 10⁷·⁶ dPa.s (ISO 7884-3) | |
Specific electrical resistance temperature | 630 °C Show Supplier Material materials with Specific electrical resistance temperature of 630 °C | For ρ = 10⁸ Ω·cm | |
Thermal conductivity | 90.0 °C | 1.1 W/(m·K) Show Supplier Material materials with Thermal conductivity of 1.1 W/(m·K) | |
Working temperature | 1305 °C Show Supplier Material materials with Working temperature of 1305 °C | Viscosity 10⁴ dPa.s (ISO 7884-2) |
Electrical
| Property | Temperature | Value |
|---|---|---|
Dielectric constant, 1MHz | 23.0 °C | 6.6 [-] Show Supplier Material materials with Dielectric constant, 1MHz of 6.6 [-] |
Electrical resistivity | 250.0 °C | 1.00E+11 Ω·m Show Supplier Material materials with Electrical resistivity of 1.00E+11 Ω·m |
350.0 °C | 1.00E+9 Ω·m Show Supplier Material materials with Electrical resistivity of 1.00E+9 Ω·m | |
Loss tangent, 1MHz | 23.0 °C | 1.5E-3 [-] Show Supplier Material materials with Loss tangent, 1MHz of 1.5E-3 [-] |
Optical
| Property | Value | Comment |
|---|---|---|
Refractive index | 1.55 [-] Show Supplier Material materials with Refractive index of 1.55 [-] | at λ=587.6 nm |
Stress optical coefficient | 2.7E-6 mm²/N Show Supplier Material materials with Stress optical coefficient of 2.7E-6 mm²/N | DIN 52314 |
Chemical properties
| Property | Value | Comment |
|---|---|---|
Other | 0.01 % Show Supplier Material materials with Other of 0.01 % | max., Lead, Cadmium, Mercury and Hexavalent Chromium |
Technological properties
| Property | ||
|---|---|---|
| Application areas | For high temperature applications in electrical engineering. For use in bulb and exhaust tube for halogen lamps for automotive, houshold and general lighting. | |
| Corrosion properties | Hydrolytic resistance Class HGB1 (ISO 719) - Acid resistance Class S2 (DIN 12116) - Alkali resistance Class A2 (ISO695) | |