K2AlF5

metal
· K2AlF5

K2AlF5 is an inorganic fluoroaluminate compound with a complex ionic crystal structure, classified here as a metal-containing ceramic rather than a traditional metallic alloy. This material belongs to the potassium aluminum fluoride family and is primarily encountered in industrial chemistry and materials research contexts, particularly as a raw material or intermediate in aluminum processing, glass manufacturing, and specialized flux applications where fluorine-containing compounds are needed to lower melting points or improve workability of molten metals and ceramics. Engineers would select K2AlF5 specifically for high-temperature applications requiring chemical stability in fluorine-rich environments and as a processing aid in metallurgical operations, though it remains less common than related compounds like cryolite (Na3AlF6) in conventional manufacturing.

aluminum smelting fluxglass and ceramic processinghigh-temperature chemical stabilitymetallurgical additivesmaterials research compoundsindustrial chemistry applications

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Bulk Modulus(K)2 entries
26.18
GPa—
↳
34.93
GPa—
Poisson's Ratio(ν)
0.2600
-—
Shear Modulus(G)2 entries
14.45
GPa—
↳
20.94
GPa—
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.
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
2.573
kg/m³—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
6.616
eV—
Dielectric Constant (Relative Permittivity)(εr)
3.960
range 1.869–6.051median of 2 measurements
-—
Magnetic Moment(μB)
0.000
µB—
Seebeck Coefficient(S)
-153.1
µV/K—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
0.000
eV/atom—
Formation Energy(ΔHf)
-3.438
eV/atom—
Verified Unverified Low confidence (<80%) Link to source

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.