| All data is for information only------(Home) | |
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| PRODUCT DATA of Calcium Fluoride |
| Material | Calcium Fluoride |
| Safety Datasheet | msds CaF2 |
| Product Datasheet | CaF2_Product_Sheet |
| Processing and Assembly | Calcium fluoride can be machined with standard diamond tools and water-based oolants. The material takes a good polish using either aluminum oxide, chromic oxide or diamond-based polishing powders using either pitch or cloth laps. |
| Product Type | glass |
| Chemical Composition | CaF2 |
| Name of Manufacturer | Corning Incorporated, Fluoride Crystals Business
24 E. Brookfield Road, PO Box 189, Brookfield, MA 01535 508 867 8200 508 867 8349 crystals@corning.com www.corning.com Corning GmbH, Corning International Abraham-Lincoln-Strasse 30, D-65189 Wiesbaden, Germany 49 611 7366 100 49 611 7366 143 CIgermany@corning.com |
| EXPERIENCE IN PRACTICE |
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| Development Status | Commercial Product |
| PHYSICAL PROPERTIES |
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| Crystal Structure | Cubic |
| Specific Gravity | 3.18 |
| ELASTIC PROPERTIES |
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| Tensile Modulus | 75.8 GPa |
| Poisson Ratio | 0.26 |
| MECHANICAL PROPERTIES |
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| Ultimate Tensile Strength | 34.1 to 157 MPA Remark:fracture strength is very dependent on surface finish The lowest values are for rough pieces. The highest values for well-annealed, optically polished material Error: 151.1 MPa Data Quality: Manufacturer's data |
| Hardness | 158 knoop Remark:Knoop hardness for both (100) and (110) directions Data Quality: Manufacturer's data |
| ELECTRICAL PROPERTIES |
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| Dielectric Constant | 6.81 @ 27C Data Quality: Manufacturer's data |
| THERMAL PROPERTIES |
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| Thermal Conductivity | 61 W/m.K |
| Thermal Expansion Coefficient | 18.7 μstrain/°C @ RT |
| Specific Heat | 0.853 J/g.K |
| Melting Range | 1420 °C |
| RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY |
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| Aging | In dry environments, calcium fluoride can be used up to 1000°C, but it does not begin to soften at 800°C. |
| Moisture Absorption | Exposure to 100% relative humidity at room temperature does not fog polished surfaces even after one month. In normal working conditions, polished surfaces will not degrade. |
| Humid Heat | For temperatures exceeding 600°C, calcium fluoride surfaces will degrade in the presence of moisture |
| SPECIAL RECOMMENDATIONS |
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| Special Recommendations | Calcium fluoride is inert to organic chemicals and many acids, including HF. It will slowly dissolve in nitric acid. |