Tri-Alloy (Copper-Tin-Zinc) 

Keystone is now offering Tri-Alloy (Copper-Tin-Zinc or White Bronze) electroplating services.  This process is being used as a low cost replacement to many silver finishes.  There are many benefits to the Tri-Alloy process.  It is lead free, does not corrode, is nickel and toxic free, is solderable and non-magnetic.  Trade names including the following:  Tri-Alloy, Miralloy, Bronzex, PMD White Bronze, Sucoplate, Speculum and Tri-M3.