Allgemein
| Property | Temperature | Value |
|---|---|---|
Dichte | 23.0 °C | 2.4 - 2.55 g/cm³ Show Material materials with Dichte of 2.4 - 2.55 g/cm³ |
Porosität | 0.01 % Show Material materials with Porosität of 0.01 % |
Mechanisch
| Property | Temperature | Value |
|---|---|---|
Biegefestigkeit | 23.0 °C | 82.7 MPa Show Material materials with Biegefestigkeit of 82.7 MPa |
Druckfestigkeit | 23.0 °C | 151.6 MPa Show Material materials with Druckfestigkeit of 151.6 MPa |
Härte, Mohs | 23.0 °C | 7 [-] Show Material materials with Härte, Mohs of 7 [-] |
Zugfestigkeit | 23.0 °C | 34.4 MPa Show Material materials with Zugfestigkeit of 34.4 MPa |
Thermisch
| Property | Temperature | Value |
|---|---|---|
Koeffizient der thermischen Ausdehnung | 600.0 °C | 6E-6 - 8E-6 1/K Show Material materials with Koeffizient der thermischen Ausdehnung of 6E-6 - 8E-6 1/K |
Max. Betriebstemperatur | 1100 °C Show Material materials with Max. Betriebstemperatur of 1100 °C | |
Vicat-Erweichungstemperatur | 1600 °C Show Material materials with Vicat-Erweichungstemperatur of 1600 °C | |
Wärmeleitfähigkeit | 23.0 °C | 1.9 W/(m·K) Show Material materials with Wärmeleitfähigkeit of 1.9 W/(m·K) |
Elektrisch
| Property | Temperature | Value | Comment |
|---|---|---|---|
Dielektrizitätskonstante | 23.0 °C | 5.2 [-] Show Material materials with Dielektrizitätskonstante of 5.2 [-] | |
Durchschlagfestigkeit | 23.0 °C | 24 kV/mm Show Material materials with Durchschlagfestigkeit of 24 kV/mm | 5mm thick test piece |
Leistungsfaktor | 23.0 °C | 1000 - 1300 [-] Show Material materials with Leistungsfaktor of 1000 - 1300 [-] | |
Verlustfaktor | 23.0 °C | 0.05 [-] Show Material materials with Verlustfaktor of 0.05 [-] |
Technological properties
| Property | ||
|---|---|---|
| Chemical composition | Silica - 56.8%, Alumina - 33.37%, Ferric oxide - 0.79%, Titanium Dioxide - 2.42%, Calcium Oxide - 0.29%, Magnesium Oxide - 0.24% | |
| Color | Pink to dark brown | |
| Other | Typical characteristics of the Pyrophyllite material include: Machinable, thermally insulating, good thermal shock properties, good mechanical stability once fired. The key features of Pyrophyllite Heat Treated at 1250 °C - 1300 °C are: Good electrical properties in humid conditions, high abrasion resistance, will give <3µm surface finish, high dielectric strength, fair dielectric constant, high mechanical stability, only diamond grinding can be used to adjust sizes. Over 1000 °C a gradual shrinkage takes place and the machined component loses some of the volume expansion that has occurred. As the material densifies the sizes will return to within ± 1% of the machined sizes. Any size alteration will have to be carried out by wet grinding. Diamond with coolant is best but Green grit wheels suffice on prototypes. Always allow Furnace to cool naturally to 200 °C before removing parts. Never wet the unfired material for machining. Safe maximum operating temperature 1100 °C. | |