Fe3S4

metal

· JVASP-86963· Fe3S4

Fe₃S₄ is an iron sulfide compound that exists as a mixed-valence ferrous-ferric sulfide, representing an intermediate phase in the iron-sulfur system. While not widely used as a primary engineering material in current industrial practice, Fe₃S₄ is primarily encountered in corrosion science, pyrometallurgy, and materials research contexts where it forms as a corrosion product on steel in sulfurous environments or as a phase in roasted sulfide ore processing. Engineers may encounter this compound when analyzing failure mechanisms in high-temperature sulfidation, designing corrosion-resistant alloys for sour gas applications, or studying iron sulfide phase chemistry in mineral processing operations.

corrosion analysis and sulfidationpyrometallurgical processingoil and gas equipment (sour service)materials research and phase studiessulfide ore processinghigh-temperature oxidation/sulfidation environments

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	10,861.9	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.4000	-	DFT · OptB88vdW
Shear Modulus(G)	3,351.8	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1739	lb/in³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	2.400	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000606	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000606	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	34.62	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	34.52	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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.2036	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.4008	eV/atom	DFT · OptB88vdW

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

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.

Fe3S4 — Properties & Data | MatWorld

Fe3S4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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