TiNi
metal· TiNi
TiNi is an equiatomic titanium-nickel intermetallic compound and the primary constituent phase in nitinol shape-memory alloys (SMAs). This material is renowned for its exceptional ability to recover from large deformations through thermal or stress-induced phase transformations, making it fundamentally different from conventional metals that yield plastically under load. Engineers select TiNi-based alloys for applications demanding reversible shape recovery, superelasticity (rubber-like behavior without permanent set), or precise actuation control—properties unattainable in standard engineering metals or polymers.
shape-memory actuatorsmedical devices and stentsorthopedic implantsvibration damping and seismic isolationprecision positioning mechanismsself-expanding deployable structures
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 152.6 | GPa | — | ||
| ↳ | 162.3 | GPa | — | ||
Poisson's Ratio(ν) | 0.4400 | - | — | ||
Shear Modulus(G)2 entries | 38.17 | GPa | — | ||
| ↳ | 28.56 | GPa | — |
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) | 6.542 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | 6.900 | µV/K | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.05450 | eV/atom | — | ||
Formation Energy(ΔHf)3 entries | -0.3749 | eV/atom | — | ||
| ↳ | -0.3431 | eV/atom | — | ||
| ↳ | -0.3786 | eV/atom | — |
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
Regulatory Screening
Environmental
Export Control
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.