# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
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REFERENCES: |
    <a href="https://refractiveindex.info/download/data/2017/schott-infrared-chalcogenide-glasses-irg-27-english-us-11042017.pdf">SCHOTT Infrared Chalcogenide Glasses - IRG 27 Product flyer (Version April 2017)</a>
DATA:
  - type: formula 2
    wavelength_range: 0.6 12
    coefficients: 1.4005 3.4429 0.0871 1.0394 805.5
  - type: tabulated k
    data: |
        0.6 1.3595E-05
        0.7 3.8631E-07
        0.8 2.7981E-07
        1.0 2.2600E-07
        1.5 1.5619E-07
        2.0 1.5996E-07
        2.5 1.7986E-07
        3.0 3.6081E-07
        3.5 3.0807E-07
        4.0 4.3963E-06
        4.5 2.8763E-07
        5.0 1.9944E-07
        5.5 2.1939E-07
        6.0 3.8351E-07
        6.5 5.1986E-07
        7.0 1.2392E-06
        7.5 2.1263E-06
        8.0 2.2681E-06
        8.5 6.3793E-06
        9.0 2.6265E-05
        9.5 5.7401E-05
        10.0 7.5340E-05
        10.5 6.6906E-05
        11.0 7.2064E-05
        11.5 1.1584E-04
        12.0 2.0408E-04
        12.5 4.1133E-04
        12.7 6.9812E-04
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -3.89e-06 0 0 1.77e-05 0 6.04e-02
    density:
      - value: 3200
    thermal_expansion:
      - temperature_range: 293 373
        value: 22.5e-06
    specific_heat:
      - value: 482
    thermal_conductivity:
      - temperature: 298
        value: 0.33
    transformation_temperature:
      - value: 470
    hardness:
      - type: Knoop
        value: 1.11e9
    fracture_toughness:
      - value: 0.285e6
    youngs_modulus:
      - value: 16.77e9