General
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 2.4 - 2.55 g/cm³ Show Material materials with Density of 2.4 - 2.55 g/cm³ |
Porosity | 0.01 % Show Material materials with Porosity of 0.01 % |
Mechanical
| Property | Temperature | Value |
|---|---|---|
Compressive strength | 23.0 °C | 151.6 MPa Show Material materials with Compressive strength of 151.6 MPa |
Flexural strength | 23.0 °C | 82.7 MPa Show Material materials with Flexural strength of 82.7 MPa |
Hardness, Mohs | 23.0 °C | 7 [-] Show Material materials with Hardness, Mohs of 7 [-] |
Tensile strength | 23.0 °C | 34.4 MPa Show Material materials with Tensile strength of 34.4 MPa |
Thermal
| Property | Temperature | Value |
|---|---|---|
Coefficient of thermal expansion | 600.0 °C | 6E-6 - 8E-6 1/K Show Material materials with Coefficient of thermal expansion of 6E-6 - 8E-6 1/K |
Max service temperature | 1100 °C Show Material materials with Max service temperature of 1100 °C | |
Thermal conductivity | 23.0 °C | 1.9 W/(m·K) Show Material materials with Thermal conductivity of 1.9 W/(m·K) |
Vicat softening temperature | 1600 °C Show Material materials with Vicat softening temperature of 1600 °C |
Electrical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Dielectric constant | 23.0 °C | 5.2 [-] Show Material materials with Dielectric constant of 5.2 [-] | |
Dielectric strength | 23.0 °C | 24 kV/mm Show Material materials with Dielectric strength of 24 kV/mm | 5mm thick test piece |
Loss factor | 23.0 °C | 0.05 [-] Show Material materials with Loss factor of 0.05 [-] | |
Power factor | 23.0 °C | 1000 - 1300 [-] Show Material materials with Power factor of 1000 - 1300 [-] |
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. | |