OPTICS CRYSTALS LASERS
   
 
Material - Aluminium (Al)

Aluminum has a high reflectance over the entire visible and near infrared spectrum.


Aluminum coatings have a good reflectance in the UV spectral range and high reflectance over visible and near infrared spectrum. Aluminium coating reflectance is higher than silver coating reflectivity in UV spectral range. Crystaltechno Ltd manufactures optics (mirrors and prisms) with Al coatings. Substrate material – different glass (including pyrex), fused silica, zerodur, sitall or astrositall etc. Besides we cover optics substrates according to customer’s specification. Crystaltechno Ltd produces chemically pure aluminum coatings with protective layer (SiO2 or MgF2) in high temperature vacuum chambers. Please send your inquiry.







BASE PROPERTIES

PARAMETER VALUE
OPTICAL  
  Termal Radiation Coefficient   0.04 - 0.06 at 323 - 773 K
PHYSICAL  
  Density   2.7 g/cm3 at 293 K  
  Melting Point   933 K  
  Heat of Melting   322 ... 394 kJ/kg  
  Thermal Conductivity   225 Wm-1K-1at 293K  
  Thermal Expansion   18.85 x 10-6/°C  
  Hardness   Knoop 158.3 kg/mm2 (100)  
  Specific Heat Capacity   854J/(kg K)  
  Brinell Hardness   167 MPa  
  Young's Modulus (E)   71 GPa  
  Shear Modulus (G)   26 GPa  
  Resistivity   2.66 x 10-6 Ohm x cm at 293 K  
  Poisson Ratio   0.26  

REGULAR REFLECTANCE

  Wavelength, µm

0.76

1,0 2.0 3.0 4.0 10.0  
  Regular Reflectance 0.72 0.75 0.86 0.91 0.92 0,98  

 



 
  (c) Crystaltechno Ltd. Vernadskogo 113-106, Moscow 119571, Russia
+7 (495) 234-5951, 234-5952, 956-7610
fax +7 (495) 433-1551
sales@crystaltechno.com
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