Properties
- Low CTE (Coefficient of Thermal Expansion)
- Low thermal conductivity
- Wear Resistant
- Good for vacuum application
Applications
- Optical parts for aerospace
- Metrology
PHYSICAL AND MECHANICAL PROPERTIES
Densification rate | >98% | |
Density | >2.5 g/cm3 | |
Grain sizeafter sintering | 0.89 μm | |
4-pt bending strength | 150 MPa | |
Weibullmodulus | 6.5 | |
TheoricalYoung modulus | 140 GPa | |
Thermalproperties from -50°C to 60 °C | ||
Thermalconductivity at RT | 3.8 W/m.K | |
Thermal expansion coefficient | at -50 °C | -0.87 *10^-6 K^-1 |
at 20 °C | -0.10 *10^-6 K^-1 | |
at 60°C | 0.22 *10^-6 K^-1 |