When the Muscle Wire® is in its martensitic form, it can be formed and bent into different shapes. However, when an electrical current of ~1.5A is applied to the wire or is heated to ~100C it reverts to austenite form and recovers its previous shape with great force. Additionally, you can anneal at ~500C (use an industrial furnace or simply a lighter) it to whatever shape you would want, next once that current or heat is applied it will return to that new shape.
Note: The datasheet found below is for Flexinol® actuator wire, which isn't exactly like all Muscle Wire® but it's close. Flexinol® Actuators Wires are made specifically for linear actuators to replace small motors or solenoids.
- Length: 305mm
- Diameter: 0.30mm
- Current Required for Austenite Form: 1.5A
- Pull Force: 2.83lbs
- Resistance: 0.31 ohms/inch