Plating is used to enhance the functionality and appearance of metal components. Chrome and nickel plating are two common types; these can be used in combination rather than being viewed as competing direct alternatives. It is possible to differentiate between these two finishes, which will assist in selecting appropriate finishes for specific applications.
Purpose and Performance Characteristics
Nickel plating is mainly used for corrosion protection. A thick stable metal layer is formed that can be made up to several hundred microns for long term protection. The finish is smooth and clean but not shiny. This makes it suitable for industrial components where appearance is not so important. In some instances, zinc nickel plating may also be considered if extra corrosion protection is required for harsh operating conditions.
Chrome plating is usually a thin layer. Decorative chrome does not provide any meaningful corrosion protection on its own and is usually applied over a layer of nickel. Its purpose is to add surface hardness and to reduce wear on components that may be subject to abrasion.
If you would like to learn more about zinc nickel plating, consider contacting a specialist in this field such as www.swmf.co.uk/surface-coatings/zinc-nickel-alloy-plating.
Appearance and Typical Applications
Nickel plated surfaces have a dull metallic appearance while chrome has a bright reflective appearance. Chrome is therefore used on visible parts such as fittings, trim and components that are frequently handled. Hard chrome plating however has a functional purpose and is used on shafts, rods and machine parts where its wear resistance is beneficial rather than its appearance.
