Fe3C

Name: Fe3C
Brand: MatWorld

metal

· Fe3C

Fe3C, commonly known as cementite, is an iron carbide intermetallic compound that forms as a hard, brittle phase in steel and cast iron microstructures. It is not used as a standalone engineering material, but rather as a critical constituent phase that develops during heat treatment and cooling of ferrous alloys, where it significantly influences hardness, wear resistance, and mechanical properties. Engineers encounter Fe3C primarily in the context of steel metallurgy and heat treatment design, where controlling cementite precipitation, dissolution, and morphology (through processes like tempering, austempering, and carburizing) is essential to achieving desired combinations of strength, toughness, and wear resistance.

steel heat treatment and microstructure controlwear-resistant tool steels and dieshardened bearings and fastenerscast iron metallurgycarburized and case-hardened componentsresearch in phase transformation and hardening mechanisms

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)3 entries	28,686.6	ksi	DFT
↳	29,642.8	ksi	DFT · OptB88vdW
↳	32,377.9	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	2.502	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Poisson's Ratio(ν)2 entries	0.3000	-	DFT · OptB88vdW
↳	0.3386	-	DFT · PBE
Shear Modulus(G)3 entries	13,151.3	ksi	DFT
↳	13,458.1	ksi	DFT · OptB88vdW
↳	11,711.8	ksi	DFT · PBE

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2690	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
Thermoelectric Power Factor(PF)2 entries	0.000942	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000963	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-25.23	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-25.60	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)	0.03190	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	0.02842	eV/atom	DFT · OptB88vdW
↳	0.06504	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

Regulatory Screening

Environmental

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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.

Fe3C — Properties & Data | MatWorld

Fe3C

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