OFHC (Oxygen-Free High Conductivity) Copper, also referred to as Oxygen-free Copper (OFC) is an electrolytically refined Copper. It’s of high purity with a level of oxygen as low as 0.001 % or below. It is more ductile and has a higher thermal and electrical conductivity.
Our mirrors are coated for maximum reflectivity. PLEIGER’s manufacturing capability covers optics for CO2-lasers and optical instruments.
Copper mirrors are available plano, spherical, aspherical, toroidal, and with internal cooling.
Copper Properties / Standard Specifications / Options
Electrical resistivity ( µΩ cm ): 1,70
Temperature coefficient ( K-1 ): 0,0038
Density ( g cm-3 ): 8,9
Melting point ( °C ): 1083
Thermal conductivity @ 23 °C ( W m-1 K-1 ): 395
Diameter: +/- 0,1 mm
Thickness: +/- 0,2 mm
Paralleslism: < 3 arc min
Clear aperture: 90 % of diameter
Figure: 1/40 wave at 10,6 µm
– spherical / aspherical
– internal cooling
– coatings [more]