Surface Treatments

Why do Silcosteel® treated pieces have different colors?

The different colors observed on Silcosteel® treated parts indicate different layer thicknesses. A blue color corresponds to a 300 to 450 Angstrom layer while a rainbow color indicates a coating of at least 1200 Angstroms.

Colors associated with layer thickness are:

Thick depositions used in our Silcosteel®-CR and Silcosteel®-UHV processes are 5µm to 20µm deep and have a silver/metallic grey appearance. The photos below show colors created by Sulfinert® (left) and Silcosteel®-CR (right) deposition.