Fe11Si5 — Properties & Data | MatWorld

Fe11Si5

metal

· Fe11Si5

Fe11Si5 is an iron-silicon intermetallic compound that belongs to the family of transition metal silicides. This material is primarily of research and development interest rather than a widely commercialized product, studied for its potential in high-temperature structural applications where conventional steels reach their limits. The iron-silicon system offers opportunities for lightweight, high-stiffness components due to the intermetallic bonding, though such materials typically require careful processing to manage brittleness and oxidation resistance.

High-temperature structural applicationsLightweight alloy developmentResearch and experimental materialsIntermetallic compound evaluationAdvanced metal matrix composites

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	225.2	GPa	DFT · OptB88vdW
↳	218.3	GPa	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	0.6910	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	Pa	DFT · PBE
Poisson's Ratio(ν)2 entries	0.3000	-	DFT · OptB88vdW
↳	0.2861	-	DFT · PBE
Shear Modulus(G)2 entries	111.4	GPa	DFT · OptB88vdW
↳	108.9	GPa	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)	7.230	kg/m³	DFT · OptB88vdW

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

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Method

Property	Value	Unit	Conditions	Source
Band Gap(Eg)2 entries	0.000	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ

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
Energy Above Hull(ΔEhull)	0.01630	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.2876	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.

Fe11Si5

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control