KF — Properties & Data | MatWorld

KF

Name: KF
Brand: MatWorld

ceramic

· KF

Potassium fluoride (KF) is an inorganic ionic ceramic compound belonging to the alkali halide family, characterized by a rock-salt crystal structure. It is primarily used in specialized optical, chemical processing, and research applications where its transparency to infrared radiation and chemical stability are advantageous. KF is notable for its role in fluorine chemistry, uranium enrichment processes, and as a component in molten salt systems; it is less common in structural engineering applications compared to other ceramics, but valued in niche industries for its unique combination of optical properties and thermal/chemical resistance.

infrared optics and windowsfluorine production and chemical synthesismolten salt reactors and thermal energy storagelaboratory and analytical equipmenturanium processing (historical/specialized)research and materials development

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)3 entries	4,187.1	ksi	DFT
↳	6,188.8	ksi	DFT · OptB88vdW
↳	4,187.1	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	0.2790	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Poisson's Ratio(ν)2 entries	0.2800	-	DFT · OptB88vdW
↳	0.2599	-	DFT · PBE
Shear Modulus(G)3 entries	2,393.5	ksi	DFT
↳	3,782.6	ksi	DFT · OptB88vdW
↳	2,393.5	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)	0.1069	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	6.461	eV	DFT · OptB88vdW
↳	10.30	eV	Measured
Dielectric Constant (Relative Permittivity)(εr)2 entries	8.107	-	DFT · OptB88vdW
↳	4.105 range 2.020–6.190median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	2.086	-	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	0.00113	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00122	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-164	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	573.7	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)	0.06180	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-2.864	eV/atom	DFT · OptB88vdW
↳	-2.946	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

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.

KF

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental