Shape Memory Alloys: niti_nb
Shape memory alloy (SMA) properties — transformation temperatures (As, Af, Ms, Mf), recovery strain, superelastic plateau stress, tensile strength, modulus, fatigue life, and hysteresis for NiTi and copper-based alloys
| alloy family | alloy id | austenite finish C (C) | austenite start C (C) | common name | corrosion resistance | density kg m3 (kg/m3) | elongation at break pct (%) | fatigue life cycles (cycles) | hysteresis width C (C) | martensite finish C (C) | martensite start C (C) | max operating temp C (C) | modulus austenite GPa (GPa) | modulus martensite GPa (GPa) | notes | recovery strain pct (%) | tensile strength MPa (MPa) | tensile strength martensite MPa (MPa) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| niti_nb | ni_46.5_ti_8.5nb | 50 | 0 | NiTi-Nb (wide hysteresis) | excellent | 6,500 | 10 | 100,000 | 120 | -100 | -70 | 80 | 65 | 30 | Nb widens hysteresis to ~120C; useful as pipe coupling; one-way SME preferred | 3 | 900 | 600 |
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