AlF3 — Properties & Data | MatWorld

AlF3

Name: AlF3
Brand: MatWorld

metal

· AlF3

Aluminum fluoride (AlF3) is an inorganic ceramic compound that exists in multiple polymorphic forms and is primarily valued for its high melting point and chemical stability. In industry, AlF3 serves as a critical flux agent in aluminum smelting (Hall-Héroult process), where it lowers the melting point of cryolite and improves electrical conductivity of the molten bath. It is also used as a raw material in specialty ceramics, abrasives, and optical applications, and has been investigated in research contexts for potential use in fluoride-based batteries and advanced refractory systems where thermal stability and resistance to molten metal corrosion are essential.

aluminum smelting fluxrefractory ceramicsspecialty abrasivesoptical coatingsmolten salt resistancefluoride battery research

Compliance & Regulations

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

Units:

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	6,543	ksi	DFT
↳	8,229.4	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.03000	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	9,006.8	ksi	DFT
↳	10,986.6	ksi	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.

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1166	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	8.240	eV	DFT · OptB88vdW
↳	11.01	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	5.186	-	DFT · OptB88vdW
↳	4.990	-	DFT · PBE
↳	3.392 range 1.972–4.813median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	1.982	-	DFT · OptB88vdW
↳	1.684	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000663	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000990	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-115.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	490.7	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	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.

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-3.755	eV/atom	DFT · OptB88vdW
↳	-3.914	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

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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.

AlF3

Mechanical Properties

Physical Properties

Electrical Properties

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