We have had several requests recently for mirrors made from some unusual materials. We have made some square mirrors from EN31 (a tool steel hardened to Rockwell 60-64), and we’ve produced mirrors from Titanium (Grade 5), a metal widely used in the aerospace and medical industries.
In many industries the demands on an optical mirror are more than reflectivity, and laser damage threshold. For example surface hardness, chemical resistance and magnetic properties might be important. In the nuclear and food industries, Stainless Steel mirrors are used in machine vision and monitoring. Not necessarily the most reflective metal, but it is approved for use in these applications.
We are always happy to trial novel materials, and have done so many times over the years. We’ve accumulated a database of dozens that we now have production processes prepared for. These include Molybdenum, Tungsten, Aluminium, ARCAP, Brass, Nickel, Stainless Steel, and various ceramics.
See more on our web site