FeSi
metal· FeSi
FeSi is an iron-silicon intermetallic compound that combines the structural properties of iron with silicon's hardening and corrosion-resistance characteristics. It is used primarily in specialized alloy additions, casting applications, and research contexts where enhanced stiffness, moderate density, and wear resistance are valued. The material is notable for its role as a strengthening phase in ferrous alloys and as an intermediate compound in silicon steel production, offering engineers an option for applications requiring improved hardness without the brittleness of pure ceramics.
steel alloy strengthening phasewear-resistant coatingscasting grain refinementelectrical steel applicationshigh-temperature structural reinforcementintermetallic research compounds
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 211.5 | GPa | — | ||
| ↳ | 211.5 | GPa | — | ||
| ↳ | 205.0 | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.05515 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Poisson's Ratio(ν)2 entries | 0.2310 | - | — | ||
| ↳ | 0.2500 | - | — | ||
Shear Modulus(G)3 entries | 138.6 | GPa | — | ||
| ↳ | 138.6 | GPa | — | ||
| ↳ | 124.5 | 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) | 6.251 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.1530 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 112.3 | - | — | ||
| ↳ | 87.90 | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 0.6593 | C/m² | — | ||
| ↳ | 0.3065 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — |
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 | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.4001 | eV/atom | — | ||
| ↳ | -0.4191 | 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.