Th
metal· JVASP-21199· Th
Thorium (Th) is a naturally occurring radioactive metal belonging to the actinide series, characterized by its high density and moderate stiffness. Historically used in aerospace, nuclear fuel, and high-temperature applications, thorium offers superior creep resistance and thermal stability compared to many conventional metals. Its use has declined due to regulatory restrictions on radioactive materials, but it remains relevant in specialized contexts such as refractory tungsten alloys, legacy turbine engines, and emerging thorium-based nuclear fuel cycles where proliferation-resistant fuel is a design requirement.
Nuclear fuel cyclesHigh-temperature refractory alloysAerospace engine components (legacy)Tungsten composite strengtheningThoriated welding electrodesResearch reactor applications
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 8,339.7 | ksi | — | ||
Poisson's Ratio(ν) | 0.2600 | - | — | ||
Shear Modulus(G) | 5,334.5 | ksi | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.4228 | lb/in³ | — |
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 | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | 0.000 | eV/atom | — |
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.