CaF2
ceramic· CaF2
Calcium fluoride (CaF₂) is an ionic ceramic compound valued for its exceptional optical transparency across a wide spectral range, from ultraviolet through infrared wavelengths. It is widely used in precision optics, thermal imaging systems, and high-energy laser applications where conventional glass fails; its chemical stability and low thermal expansion also make it suitable for specialized metallurgical applications as a flux. Engineers select CaF₂ over alternatives like silica or sapphire when broad-spectrum transparency, particularly in the IR region, or extreme chemical resistance is required, despite its higher cost and more limited mechanical workability.
optical lenses and windowsinfrared spectroscopylaser optics and UV-IR systemshigh-temperature thermal imagingmetallurgical fluxcryogenic applications
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 11,102 | ksi | — | ||
| ↳ | 11,102 | ksi | — | ||
| ↳ | 12,467.4 | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.4910 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Poisson's Ratio(ν)2 entries | 0.2849 | - | — | ||
| ↳ | 0.2800 | - | — | ||
Shear Modulus(G)3 entries | 5,574.9 | ksi | — | ||
| ↳ | 5,574.9 | ksi | — | ||
| ↳ | 7,468 | ksi | — |
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
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.1133 | lb/in³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 9.920 | eV | — | ||
| ↳ | 5.251 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 9.710 | - | — | ||
| ↳ | 5.188 range 2.318–8.059median of 2 measurements | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -182.2 | µV/K | — |
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
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.2449 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -4.242 | eV/atom | — | ||
| ↳ | -3.926 | eV/atom | — |
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
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.