FeS — Properties & Data | MatWorld

FeS

Name: FeS
Brand: MatWorld

metal

· FeS

Iron sulfide (FeS) is a binary transition metal compound that exists in several crystallographic phases, most commonly as troilite (hexagonal) or pyrrhotite (monoclinic variants). It serves primarily as a precursor material and intermediate in metallurgical processes, ore roasting, and chemical synthesis rather than as a finished engineering material in load-bearing applications. FeS is of significant interest in battery research, particularly for high-temperature thermal energy storage and emerging solid-state battery chemistries, and appears in geochemistry and corrosion studies due to its natural occurrence in sulfide mineral deposits and its role in sulfidic corrosion of steel infrastructure.

energy storage and battery developmentmetallurgical processingcorrosion mechanism researchhigh-temperature thermal storageore beneficiationmaterials research and synthesis

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	29.77	GPa	DFT
↳	153.5	GPa	DFT · OptB88vdW
Exfoliation Energy(Eexf)	85.46	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	18.51	GPa	DFT
↳	74.93	GPa	DFT · OptB88vdW

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, or test environment.

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Property	Value	Unit	Conditions	Source
Density(ρ)	5.965	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	56.07	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000172	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000184	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-2.953	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-3.170	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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, or test environment.

Verified Unverified Low confidence (<80%) Link to source

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.2007	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.3806	eV/atom	DFT · OptB88vdW
↳	-0.5269	eV/atom	Measured

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, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

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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.

FeS

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