YAlSi
metal· YAlSi
YAlSi is an intermetallic compound combining yttrium, aluminum, and silicon, belonging to the family of rare-earth transition-metal aluminides. This material is primarily of research interest for high-temperature structural applications, where its combination of low density and ceramic-like stiffness offers potential advantages over conventional superalloys. YAlSi and related ternary intermetallics are being investigated for aerospace propulsion systems and advanced power generation where operating temperatures and weight reduction are critical design drivers, though commercial deployment remains limited compared to established nickel-based superalloys.
high-temperature aerospace structuresexperimental turbine applicationslightweight intermetallic researchadvanced propulsion systemshigh-temperature composite reinforcement
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 12,827.5 | ksi | — | ||
| ↳ | 12,827.5 | ksi | — | ||
| ↳ | 12,576.2 | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.2447 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Poisson's Ratio(ν)2 entries | 0.2137 | - | — | ||
| ↳ | 0.2100 | - | — | ||
Shear Modulus(G)3 entries | 9,075.8 | ksi | — | ||
| ↳ | 9,075.8 | ksi | — | ||
| ↳ | 9,115.6 | ksi | — |
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) | 0.1447 | 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 | — | ||
Seebeck Coefficient(S) | 9.260 | µV/K | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.6433 | 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.