TiNiSn

metal

· TiNiSn

TiNiSn is a ternary intermetallic compound combining titanium, nickel, and tin, belonging to the class of advanced metallic materials and shape-memory or high-temperature alloy families. This material is primarily of research and developmental interest, with potential applications in thermoelectric devices, high-temperature structural components, and precision actuation systems where the combination of metallic bonding and intermetallic ordering provides specific mechanical and thermal characteristics. Engineers would consider TiNiSn where conventional binary alloys (such as TiNi or NiTi) fall short in performance, particularly when operating environments demand tailored thermal conductivity, stiffness, or shape-recovery behavior combined with tin's contribution to phase stability or cost optimization.

thermoelectric devicesshape-memory alloy researchhigh-temperature structural applicationsprecision actuatorsintermetallic research compoundsadvanced aerospace materials development

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	14,151.3	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2800	-	DFT · OptB88vdW
Shear Modulus(G)	-3,083.5	ksi	DFT · OptB88vdW

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Property	Value	Unit	Conditions	Source
Thermal Conductivity(k)2 entries	3.511	BTU/(hr·ft·°F)	Measured · 27°C
↳	3.511	BTU/(hr·ft·°F)	Measured

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, or test environment.

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Property	Value	Unit	Conditions	Source
Density(ρ)	0.2354	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.4630	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	26.90 range 23.51–30.28median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	26.82	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.2000	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.2200	me	DFT · OptB88vdW · 27°C
Electrical Conductivity(σ)	31.83	S/cm	Measured · 27°C
Electrical Resistivity(ρe)	0.000314	Ω·m	Measured · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)3 entries	0.000234	W/(m·K²)	Measured · 27°C
↳	0.00240	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00254	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)3 entries	-271.3	μV/K	Measured · 27°C
↳	-283.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	367.7	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Thermoelectric Figure of Merit(zT)	0.01157	-	Measured · 27°C

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, or test environment.

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Method

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.6595	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	0.1124	eV/atom	DFT · OptB88vdW
↳	-0.5452	eV/atom	Measured

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, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

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.

TiNiSn — Properties & Data | MatWorld