Superelasticity is a phenomenon when Nitinol gets back to its previous shape and it is very hard to deform.
It behaves almost like spring steel. Nitinol is superelastic in two cases:
- If it has temperature slightly over the activation temperature
- If it is a raw never annealed Nitinol
Nitinol with shape memory could be easily deformed under the activation temperature. It behaves almost like a tin wire with one difference - it can't be bend to too acute angles.