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Syngony | Cubic |
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Symmetry Class | m3m |
Lattice Constants | a = 4.026 Å c = a |
Cleavability | (100), perfect |
Refractive Index at ne | 1.3931 |
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Refractive Index at nF' - nC' | 0.0040 |
Thermal Coefficient of Refractive Index at 3.39 microns for ±60 °C | (-1.25) ... (-1.51) x 10-5 |
Transmission Range, microns | 0.12 - 6.5 |
Thermal Linear Expansion, °C-1 for ±60 °C |
(28.1 ... 34.8) x 10-6 |
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Thermal Conductivity, W/(m * °C) at 38 °C |
14.2 |
Specific Heat Capacity, J/(kg * °C) | 1.5617 x 103 |
Melting Point, °C | 870 |
Density, g/cm3 at 20 °C | 2.60 |
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Mohs Hardness | 4 |
Vickers Microhardness, Pa | 98 x 107 |
Constants of Elastic Compliance, Pa-1 | S11 = 11.32 x 10-12 S12 = -3.06 x 10-12 S44 = 15.91 x 10-12 |
Young Modulus (E), Pa | |
in <100> direction | 8.84 x 1010 |
in <111> direction | 14.22 x 1010 |
Shear Modulus (G), Pa | |
in <100> direction | 4.09 x 1010 |
in <111> direction | 6.29 x 1010 |
Poisson Ratio | 0.270 |
Molecular Weight | 25.94 |
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Solubility | |
in water, gram/100 cm3 | 0.27 |
in acids | soluble |
Wavelength, Microns | Refractive Index |
---|---|
0.2 | 1.439 |
0.5 | 1.3943 |
1.0 | 1.3871 |
2.0 | 1.3788 |
3.0 | 1.3666 |
4.0 | 1.3494 |
5.0 | 1.3266 |
6.0 | 1.2975 |
7.0 | 1.262 |
8.0 | 1.218 |
9.0 | 1.165 |
10.0 | 1.101 |
Wavelength, Microns | Internal Transmittance |
---|---|
0.2 | 0.90 |
0.5 | 0.98 |
1.0 | 0.97 |
3.0 | 0.97 |
5.0 | 0.88 |
6.0 | 0.65 |
7.0 | 0.14 |