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Quick Details

Chemical Composition: Ge
Shape: round or Square
Application: CO2 laser or imaging system
Place of Origin: China (Mainland)

Specifications

Features:

Crystal Type cubic, diamond structure 
Transmission Range 1.8-23μm 
Refractive Index 4.0034 when 9.72μm 
4.0028 when 10.6μm 
Reflective Loss 52.9% when 10μm 
Density 5.323g/cm 
Melting Point 956,959,942,938℃ 
Molecular Weight 72.59 
Thermal Conductivity 58.61 W/(m K) 
Specifics Heat 310J/(kg K) when 25℃ 
Thermal Expansion 5.5ⅹ10 /K,6.1ⅹ10 /K 
Hardness (Knoop) 780 
Young's Modulus 102.7<100>,155.3<111>GPa 
Shear Modulus 67<100>GPa 
Bulk Modulus 77.2GPa 
Rupture Modulus 93MPa 
Dielectric Constant 16.6 when f=9.37MHz 
Solubility Water Insoluble 
Application Electronics lenses, band pass filters, thermography 
Remarks laser damage threshold:2.9-3.3GW / cm



Specifications:

for example
Diameter, mm Thickness, mm
10 * 2
12.7 * 2
12.7 * 3
19.05 * 3
19.05 * 4

20 * 2
20 * 3
20 * 4
25.4 * 3
25.4 * 4
25.4 * 5
38.1 * 4
38.1 * 6
38.1 * 9
50.8 * 6
50.8 * 8
50.8 * 10

Application:

CO2 laser machine
Imaging systems and instruments



Germanium material