All materials
Controlled expansion alloys
Osprey® CE17MF
Controlled expansion aluminium-silicon alloy, Al-27%Si, with a room-temperature expansion of 15.3 ppm/°C and a density of 2.6 g/cc. Machined components for electronics packaging, photonics and space hardware.
Physical, mechanical and thermal properties
| Composition | Al-27%Si |
|---|---|
| Tensile strength, MPa | 175-312 |
| Yield strength, MPa | 282 |
| Young's modulus, GPa | 91.8 |
| Density, g/cc | 2.6 |
| Hardness, HV | 75–132 |
| Thermal conductivity at 25°C, W/m·K | 146.8 |
| Thermal conductivity at 200°C, W/m·K | 146.5 |
| CTE at room temp., ppm/°C | 15.3 |
| CTE 25–200°C, ppm/°C | 17.1 |
| CTE 25–500°C, ppm/°C | 19 |
Supplied as
Machined components to drawing, from billet. Controlled expansion alloys are not supplied as powder.