Table 2 Fe-based SMA properties.
Terms | Units | Values |
|---|---|---|
Proof stress, UTS, Recovery stress | MPa | 200 ~ 300, 680 ~ 1,000, 150 ~ 200 |
Ductility | % | 16 ~ 30 |
Micro-hardness | Hv | 190 ~ 220 |
Specific resistance | Ω·cm | 100 ~ 130 × 10⁻⁶ |
Specific heat | cal/g·deg | 0.13 |
Melting point | °C | 1,320 ~ 1,350 |
Young’s modulus | GPa | 170.0 |
Density (25 °C) | g/cm³ | 7.2 ~ 7.5 (7.454) |
Thermal expansion (0 ~ 500 °C) | °C⁻¹ | 16.5 × 10⁻⁶ |
Shear modulus | GPa | 65.0 |
Thermal conductivity | cal/cm·deg·sec | 0.02 |
Recovery strain | % | 2.5 ~ 4.5 |
Poisson ratio | -- | 0.359 |
Magnetic property | -- | Paramagnetism |
