Bright nickel chrome is what you see, not necessarily what you get. Depending on your application requirements, the layers of metal plating underneath the bright nickel chrome can include a copper strike, nickel strike, semi-bright nickel, high sulfur nickel, a layer of bright nickel, micro-porous nickel, and a final topcoat of chromium. Why so many layers? The layers of nickel are structured to provide increased levels of corrosion protection. There is a specific ratio for the thickness and a measurable difference in electrochemical potential of the semi-bright nickel layer to bright nickel layer. High sulfur nickel layers and micro porous nickel layers are designed to improve the corrosion performance. We determine which layers of nickel to use by understanding the application, part specification, and corrosion requirements.
Mirror chrome is a good way to describe bright nickel chrome. The appearance can be as reflective as a mirror. The more reflective a part must be (usually referred to as an “A surface”), the smoother the surface finish needs to be before chrome plating. Nickel plating has a white finish and the chrome plating which deposits chromium has a clear translucent finish which is hard and scratch resistant.
Tin plating is a process which provides a bright silver finish and is composed of at least 99.5% tin. This type of plating is commonly used to provide a surface with great solderability and some corrosion protection. Typically tin plating is used in the printed circuit board industry, the food industry, as well as for decorative purposes. The main application for tin plating in the circuit board industry is to make use of the tin's solderability. On such substrate materials as brass or zinc die cast it is necessary to use a barrier layer of either copper or nickel to impede the migration of the zinc into the tin deposit. This barrier layer will further increase the shelf life of the tin plating on these substrate materials.Applications :
The primary purpose of using tin would be due to the economical price point in comparison to gold or platinum. Beyond the cost, the excellent solderability and corrosion resistance are the definitive properties of Tin that many industries seek. In addition, Tin also possesses moderate conductivity, adjustable appearance (dull/shiny), and FDA approval for food service.
A barrier layer/underplate such as Copper or Nickel Plating will enhance its ability to minimize migration of Alloying metals like Zinc into the Tin deposit. Last but not least, Tin is soft, ductile, and malleable. Its ductility allows a Tin coated sheet to be bent and formed without damaging the Tin deposit.
We offer a dull chrome finish for components that require a non-reflective finish that offers the same protective finish. This achieved by plating normal chrome onto a dull nickel under coat which gives you a very flat mat finish. This finish was commonly adopted on many motorcycles such as Velocette on items such a carburetors, fuel taps and oil pipes etc. We have been asked for this finish more and more by enthusiasts as an alternative for Cadmium plating purely for the finish and colour matches almost exactly Cadmium which is no longer commercially available.
This is a new finish offered and it consists of a 70/30 duplex nickel layer i.e. 70% Dull Nickel under coat with a 30% bright nickel top coat. This finish offers a higher degree of protection and gives a similar finish to the old Cadmium plating, but slightly more yellow in appearance. This finish has been widely adopted by a lot of our E-Type Jaguar restorers on suspension parts.