BS EN ISO 1456:2009,Metallic and other inorganic coatings — Electrodeposited coatings of nickel, nickel plus chromium, copper plus nickel and of copper plus nickel plus chromium.
BS EN ISO 1456:2009 specifies requirements for decorative nickel, nickel plus chromium, copper plus nickel and copper plus nickel plus chromium coatings that are applied to iron, steel, zinc alloys, copper and copper alloys, and to aluminium and aluminium alloys, to provide an attractive appearance and enhanced corrosion resistance. Coating designations are specified that differ in thickness and type, and guidance is given on selecting the coating designation appropriate for the service conditions to which the coated product will be exposed.
BS EN ISO 1456:2009 does not specify the surface condition required by the basis metal prior to the coating process, and is not applicable to coatings on sheet, strip or wire in the non-fabricated form nor to threaded fasteners or coil springs.
Requirements for decorative elec roplated copper plus nickel plus chromium coatings on plastic materials are specified in ISO 4525,ISO 4526 and ISO 6158 specify requirements for coatings of nickel and chromium respectively, for engineering purposes.
This International Standard is a revised version of ISO 1456: 2003: Metalic coatings-Electrodeposited coatings of nickel plls chomium and of copper pls nicke plus chromium incorporating ISO 1458: 2002: Metallic coatings -Electrodeposited coatings of nickel.
Decorative, electrodeposited nickel coatings, with and without copper undercoats and without chromium top coats, are suitable for applications in which tarnishing could be prevented by avoiding rubbing or handling in sevice or by the use of topcoats other than chromium. They are also suitable for those applications where tarnishing is of no importance. Corrosion resistance depends on the type and thickness of the coatings.
Decorative, electrodeposited nickel plus chromium and copper plus nickel plus chromium coatings are applied to manufactured articles to enhance their appearance and corrosion resistance.Corrosion resistance depends on the type and thickness of the coatings. In general, multilayer nickel coatings provide better corrosion esistance than single-layer nickel atings of equal thickness, and micro-discontinuous chromium coating provide better protection than conventional chromium.