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Chemical Formula

Ge

Crystal Form

 SingleCrystal

Crystal Class

Cubic

Lattice Constant, ?

5.66

Density, g/cm³ at 300 K

5.33

Dielectric Constant for 9.37 x 10⁹ Hz at 300 K

16.6

Melting Temperature

936 ℃

Thermal Conductivity, W/(m K) at 293 K

58.61

Thermal Expansion, 1/K at 298 K

6.1 x 10^-6

Absorption coefficient(1/cm )

1.3x10^-3@3.8um

3.0x10^-3@10.6um

Solubility in water

None

Knoop Hardness, kg/mm²

780

Young's Modulus, GPa

102.7

Shear Modulus, GPa

67.00

Bulk Modulus, GPa

77.2

Poisson's Ratio

0.28

Transmission Range

2-12um