This SAE Standard specifies the requirements for the electro-deposition of gold on ferrous-base materials@ copperbase materials@ aluminum-base materials@ zinc-base materials and nickel-base materials for MOD use. It is primarily intended for use on electrical and electronic items which are to be plated with gold to: Increase the electrical conductivity of the surface. Provide a solderable surface. This Standard does not cover the gold plating of threaded items.