ErFe4B
metal· JVASP-20836· ErFe4B
ErFe4B is an intermetallic compound combining erbium, iron, and boron, belonging to the rare-earth iron boride family of materials. This material is primarily explored in research contexts for magnetic and high-strength applications, leveraging erbium's magnetic properties and the hardness contributed by boron. ErFe4B and related rare-earth iron borides show promise in specialty applications requiring combined magnetic performance and mechanical robustness, though industrial adoption remains limited compared to conventional ferromagnetic alloys.
rare-earth permanent magnetshigh-temperature magnetic devicesresearch and developmentmagnetic actuatorsaerospace/defense materials explorationboride-strengthened intermetallics
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 24,137.2 | ksi | — | ||
Poisson's Ratio(ν) | 0.3800 | - | — | ||
Shear Modulus(G) | 6,119.1 | ksi | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.3174 | lb/in³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Seebeck Coefficient(S) | -17.25 | 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) | -0.2693 | 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.