FeO

ceramic
· FeO

FeO (iron(II) oxide or wüstite) is an ionic ceramic compound consisting of iron cations and oxygen anions, typically found as an intermediate or constituent phase rather than a standalone engineering material. It appears naturally in iron oxide systems and is commonly encountered as a component in steelmaking slags, foundry materials, and ceramic formulations where it influences thermal and chemical properties. Engineers select FeO-containing materials primarily for applications requiring specific oxidation behavior, thermal stability, or as part of multi-phase ceramic composites rather than for monolithic FeO itself, since pure wüstite is metastable at room temperature and prone to oxidation or reduction.

steelmaking slagfoundry refractoriesiron oxide ceramicsthermal insulationceramic compositeslaboratory research

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65
PropertyValueUnitConditionsSource
Bulk Modulus(K)2 entries
ksi
ksi
Poisson's Ratio(ν)
-
Shear Modulus(G)2 entries
ksi
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
PropertyValueUnitConditionsSource
Density(ρ)
lb/in³
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
eV
Magnetic Moment(μB)
µB
Seebeck Coefficient(S)
µV/K
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
eV/atom
Formation Energy(ΔHf)2 entries
eV/atom
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

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.
FeO — Properties & Data | MatWorld