Si2W
metal· Si2W
Si2W is an intermetallic compound combining silicon and tungsten, belonging to the refractory metal silicide family. This material is primarily of research and development interest rather than a widely commercialized engineering material; silicides in this class are investigated for high-temperature structural applications where conventional superalloys reach their limits. Si2W and related tungsten silicides are explored in aerospace, power generation, and materials science contexts for potential use in extreme thermal environments, though practical engineering adoption remains limited and material processing methods are still being refined.
high-temperature structural applicationsrefractory materials researchaerospace engine componentsadvanced materials developmentextreme environment protection
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 218.5 | GPa | — | ||
| ↳ | 209.1 | GPa | — | ||
| ↳ | 219.7 range 218.5–220.9median of 2 measurements | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.06092 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Poisson's Ratio(ν)2 entries | 0.1646 | - | — | ||
| ↳ | 0.2300 | - | — | ||
Shear Modulus(G)3 entries | 188.8 | GPa | — | ||
| ↳ | 138.5 | GPa | — | ||
| ↳ | 168.1 range 147.5–188.8median of 2 measurements | 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) | 9.593 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.2310 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -132.8 | µV/K | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.1065 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.2829 | eV/atom | — | ||
| ↳ | -0.1167 | 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.