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  • Germanium For Sell - China

    price: contact company for price

    Physicochemical property:
    Density (g cm-3) 5.33
    Melting point (℃) 936
    Dielectric constant static state/high frame 16.6 @ 9.37GHZ(300K)
    Coefficient of thermal expansion (1/℃) 6.1*10-6 @298K
    Bulk modulus (Gpa) 77.2
    Shear modulus (Gpa) 67
    Thermal conductivity (J/k .m. s) 58.61 @ 293K
    Thermal capacity(J/g .k) 0.31
    Knoop hardness (kg/mm2) 780
    Young modulus (Gpa) 102.7
    Poisson’s ratio 0.28
    Coefficient of elasticity C11=129 C11=48.3 C11=67.1
    Optical property:
    Transmitted wavelength range 2000nm—12000nm
    Absorption coefficient (1/cm) 1. 1.3*10-3 @ 3800nm
    2. 3*10-2 @ 10600nm
    Thermo-optical coefficient dn/dT (1/k) 4.08*10-4 @10600nm
    Change of refractive index along with wavelength
    Wavelength (nm) Refractive index (n) Wavelength Refractive index
    2200 4.0879 8000 4.0057
    3000 4.0451 9000 4.0040
    3800 4.0267 10600 4.0028
    5000 4.0160 11000 4.0025
    6000 4.0107 12000 4.0021
    7000 4.0079 13000 4.0018
    Technical requirement Tolerance range
    Size range 1-400mm
    Size tolerance +0/-0.05mm
    Angle tolerance ±2”-±5’´
    Surface quality 40/20
    Surface accuracy λ/10 per @633nm
    Beveling 0.1-0.5mm
    Material ZnSe
    Coating film 8-14micrometers or 3-5 micrometers etc, band


    Company Contact:


    • Phone: 15860296796

    • Address: 4/F, 12th Bldg, Taijiang Industrial Park, Juyuanzhou Industrial Zone,Fuzhou, Fujian, China, Fuzhou, Fujian, China

    • Email: Email


    Published date: August 11, 2016 -

    • Business Description: Our manufacturing capabilities consist of all types of customized lens, Beam Splitters, Polarizing Optics, Prisms, Filters, Coatings, Optical Systems, Optical Assemblies and Optical Systems Solutions, Laser Crystals, NLO Crystals. The products are widely used in laser industry, optical communication, laser display, medical equipment, survey equipment, precision Instrument and semiconductor.

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