All materials
Controlled expansion alloys
Osprey® CE11F
Controlled expansion aluminium-silicon alloy, Al-50%Si, with a room-temperature expansion of 11.4 ppm/°C and a density of 2.51 g/cc. Machined components for electronics packaging, photonics and space hardware.
Physical, mechanical and thermal properties
| Composition | Al-50%Si |
|---|---|
| Tensile strength, MPa | 193 |
| Yield strength, MPa | 189 |
| Young's modulus, GPa | 121.4 |
| Density, g/cc | 2.51 |
| Thermal conductivity at 25°C, W/m·K | 132 |
| CTE at room temp., ppm/°C | 11.4 |
| CTE 25–200°C, ppm/°C | 12.3 |
| CTE 25–500°C, ppm/°C | 13.7 |
Supplied as
Machined components to drawing, from billet. Controlled expansion alloys are not supplied as powder.