Table 1. Nickel-titanium-based wires used in this study classified by commercial name, composition, number of strands and test condition .
Group | Number | Commercial name | Composition | Number of strands | Test condition |
1 | 20 | Rematitan “Lite” | NiTi | Single-strand | As-received |
2 | 20 | Recycled | |||
3 | 20 | Damon Copper NiTi | Copper NiTi | Single-strand | As-received |
4 | 20 | Recycled | |||
5 | 20 | Supercable | NiTi | Multi-strand | As-received |
6 | 20 | Recycled |