| OPTICAL |
|
| |
Transmission Range |
1.8 to 23 microns |
| |
Refractive Index |
4.0026 at 11 microns |
| |
Reflection Loss |
59.1% at 11 µm (2 surfaces) |
| |
Index of Absorption |
1.3 x 10-3 cm-1 at 3.8 microns |
| |
dN/dT |
396 x 10-6/°C |
| |
dN/dµ = 0 |
R.I. almost constant |
| |
|
|
| PHYSICAL |
|
| |
Density |
5.33 g/cm3 |
| |
Melting Point |
936°C |
| |
Thermal Conductivity |
58.61Wm-1K-1 at 293K |
| |
Thermal Expansion |
6.1 x 10-6/°C at 298K |
| |
Hardness |
Knoop 780 |
| |
Specific Heat Capacity |
310 J kg-1K-1 |
| |
Dielectric Constant |
16.6 at 9.37GHz at 300K |
| |
Young's Modulus (E) |
102.7 GPa |
| |
Shear Modulus (G) |
67 GPa |
| |
Bulk Modulus (K) |
77.2 GPa |
| |
Elastic Coefficients |
C11 = 129 C12 = 48.3 C44 = 67.1 |
| |
|
89.6 MPa (13000psi) |
| |
Poisson Ratio |
0.28 |
| CHEMICAL |
|
| |
Solubility |
Insoluble in water |
| |
Molecular Weight |
72.59 |
| |
Class/Structure |
Cubic diamond, Fd3m | |
|
