Nitinol (NiTi) Shape Memory Actuator
Verifiedmetal· NiTi SM· Nitinol actuator wire· Flexinol
Nitinol (NiTi) is a near-equiatomic nickel-titanium intermetallic alloy that exhibits shape memory and superelastic behavior, allowing it to recover large deformations upon heating or unloading without permanent plastic strain. This unique metallurgical behavior—driven by reversible martensitic phase transformations—makes it invaluable in applications requiring actuators, dampers, or components that must return to a programmed geometry after deformation. Engineers select Nitinol over conventional metals when design space is constrained and active or passive motion control is needed, or when the ability to absorb large strains without failure is critical to device function.
Medical implants and stentsActuators and smart devicesOrthodontic wires and bracesThermal or mechanical switchesVibration damping and impact absorptionRobotics and mechanical automation
Compliance & Regulations
?EAR?ISO 10993?Conflict Free?FDA?RoHS?REACH?TSCA?Prop 65
Property OverviewNormalized to typical max values
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 25.00 | - | — | ||
Fatigue Strength (10⁷ cycles)(σf) | 350.0 | MPa | notes | ||
Recovery Strain(ε_rec)2 entries | 6.000 | - | — | ||
| ↳ | 8.000 | - | — | ||
Stress–Strain Curve(σ–ε) | Curve (12 pts) | Pa | -20°C | ||
Superelastic Plateau Stress(σ_SE) | 100.0 | MPa | — | ||
Ultimate Tensile Strength(σUTS) | 900.0 | MPa | — | ||
Young's Modulus(E) | 28.00 | GPa | notes |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Austenite Finish Temperature (Af)(Af)2 entries | 373 | K | — | ||
| ↳ | 353 | K | — | ||
Austenite Start Temperature (As)(As)2 entries | 343 | K | — | ||
| ↳ | 333 | K | — | ||
Martensite Finish Temperature (Mf)(Mf) | 303 | K | — | ||
Martensite Start Temperature (Ms)(Ms)2 entries | 333 | K | — | ||
| ↳ | 323 | K | — | ||
Melting Point / Solidus(Tm) | 1,513.2 – 1,583.2 | K | — | ||
Specific Heat Capacity(Cp) | 490 | J/(kg·K) | — | ||
Thermal Conductivity(k) | 8.600 | W/(m·K) | notes | ||
Thermal Hysteresis(ΔT_hyst)2 entries | 40.00 | K | — | ||
| ↳ | 30.00 | K | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 6.450 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Electrical Resistivity(ρe) | 7.600e-7 | Ω·m | notes |
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Export Control
Safety & Biocompatibility
RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.