HfFe2
metal· HfFe2
HfFe2 is an intermetallic compound combining hafnium and iron in a 1:2 stoichiometric ratio, belonging to the class of refractory metal intermetallics. This material exhibits high stiffness and density, making it of interest for applications requiring exceptional rigidity and thermal stability. While primarily explored in research and specialized aerospace contexts, HfFe2 represents the broader family of hafnium-based intermetallics valued for extreme environments where conventional alloys reach their performance limits.
high-temperature structural applicationsaerospace componentsrefractory intermetallics researchthermal barrier systemsmaterials for extreme environmentsstiffness-critical design
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 23,502.3 | ksi | — | ||
| ↳ | 23,502.3 | ksi | — | ||
| ↳ | 26,784.1 | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.1219 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Poisson's Ratio(ν)2 entries | 0.2831 | - | — | ||
| ↳ | 0.3600 | - | — | ||
Shear Modulus(G)3 entries | 11,919.5 | ksi | — | ||
| ↳ | 11,919.5 | ksi | — | ||
| ↳ | 8,655.9 | 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) | 0.4152 | lb/in³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 0.000 | eV | — | ||
| ↳ | 0.000 | eV | — | ||
Magnetic Moment(μB) | 5.978 | µB | — | ||
Seebeck Coefficient(S) | 4.180 | µV/K | — |
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) | 0.00720 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.1275 | eV/atom | — | ||
| ↳ | -0.3612 | 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.