# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: |
    <a href="https://refractiveindex.info/download/data/2013/BD-2.pdf">BD-2 Glass Datasheet (revision 2013-05)</a>
COMMENTS: |
    All values represent glass characteristics after molding
DATA:
  - type: tabulated nk
    data: |
        3 2.6266 2.387E-7
        4 2.6210 3.183E-7
        5 2.6173 3.979E-7
        6 2.6142 4.775E-7
        7 2.6117 5.570E-7
        8 2.6088 6.366E-7
        9 2.6055 7.162E-7
        10 2.6023 7.958E-7
        11 2.5983 2.626E-6
        12 2.5942 1.241E-5
        13 2.5892 2.069E-5
        14 2.5843 2.228E-5
PROPERTIES:
    density:
      - value: 4670
    hardness:
      - type: Knoop
        value: 1.47e9
    youngs_modulus:
      - value: 22.1e9
    thermal_expansion:
      - value: 14e-06
    thermal_dispersion:
      - type: dn/dT
        value: 91e-6
    transformation_temperature:
      - value: 551