Crystallographic
|
Syngony |
Cubic |
|
Symmetry Class |
m3m |
|
Lattice Constants |
a = 5.657 Å c = a |
|
Cleavability |
(111), perfect |
Optical
|
Refractive Index at n10.6 |
4.0034 |
|
Refractive Index at n8.0 - n12.5 |
0.0036 |
|
Thermal Coefficient of Refractive Index at 3.39 microns for ±60 ℃ |
35 - 40 x 10-5 |
|
Transmission Range, microns |
2 - 17 |
Thermal
|
Thermal Linear Expansion, ℃-1 for ±60 ℃ |
(5.1 ... 5.8) x 10-6 |
|
Thermal Conductivity, W/(m * ℃) at 27 ℃ |
59.8 |
|
Specific Heat Capacity, J/(kg * ℃) |
0.310 |
|
Melting Point, ℃ |
937 |
|
Absorbance μ(λ) , cm-1 |
|
|
at 10.6 microns |
0.027 |
Mechanical
|
Density, g/cm3 at 25 ℃ |
5.33 |
|
Mohs Hardness |
6 |
|
Vickers Microhardness, Pa |
900 x 107 |
|
Constants of Elastic Compliance, Pa-1 |
S11 = 9.69 x 10-12 S12 = -2.65 x 10-12 S44 = 14.89 x 10-12 |
|
Young Modulus (E), Pa |
|
|
in <100> direction |
10.32x 1010 |
|
in <111> direction |
15.56 x 1010 |
|
Shear Modulus (G), Pa |
|
|
in <100> direction |
6.72 x 1010 |
|
in <111> direction |
4.67 x 1010 |
|
Poisson Ratio |
0.278 |
Chemical
|
Molecular Weight |
72.61 |
|
Solubility |
|
|
in water, gram/100 cm3 |
insoluble |
Ref. Index vs. Wavelength λ
|
Wavelength, Microns |
Refractive Index |
|
2.0 |
4.1079 |
|
3.0 |
4.0446 |
|
4.0 |
4.0242 |
|
5.0 |
4.0153 |
|
6.0 |
4.0106 |
|
7.0 |
4.0076 |
|
8.0 |
4.0053 |
|
9.0 |
4.0047 |
|
10.0 |
4.0040 |
|
11.0 |
4.0031 |
|
12.0 |
4.0029 |
|
12.5 |
4.0024 |
|
15.0 |
4.0017 |
Internal Transmittance
|
Wavelength, Microns |
Internal Transmittance |
|
3.0 |
0.97 |
|
5.0 |
0.97 |
|
6.0 |
0.97 |
|
7.0 |
0.97 |
|
8.0 |
0.97 |
|
9.0 |
0.97 |
|
10.0 |
0.96 |
|
12.0 |
0.70 |
|
15.0 |
0.56 |
Custom sizes and specifications are available on request.
