Chroming, or chrome plating, is the process of coating an object with the metal chromium, which creates a silvery, shiny finish. Many silver-looking metal finishes are on the market, but a finish cannot be called chrome plating unless chromium is used in the process. This process is often used to dress up vehicle parts and make them more durable and less likely to rust. Several processes exist to apply chrome, which should only be carried out by professionals since the chemicals used are toxic and can contaminate water supplies if spilled. Two types of chrome plating are performed at our company. Decorative and hard plating.
Decorative chrome plating is applied to objects to create a shiny, mirror-like finish and to protect against corrosion. A thin layer of chromium is used in this process. The object is first sanded down, then electroplated with copper, then nickel, then bathed in chromium and electrified. Decorative chrome plating usually has a bluish cast.
Gold Plating typically is yellow in color and can range from matte to a bright reflective finish. Pure gold is considered to be 24k while alloy gold can vary from 14k to 23k gold. Applications range from decorative, electronics, medical implant to spacecraft components. Corrosion resistance is excellent and provides excellent tarnish resistance. Contact resistance is low and solderability very good. Because of the varied options in chemistries and the performance characteristics each may produce, it is recommended that customers contact one of our engineering team members for guidance.
Above used from Electronic Precision Specialties, Inc.
There is a nickel finish for almost any need. Nickel can be deposited soft or had dull or bright, depending on process used and conditions employed in plating. Thus, hardness can range from 150-500 Vickers. Corrosion resistance is a function of thickness. Has a low coefficient of thermal expansion-is magnetic. This type of plating includes subtypes such as Black Nickel, Satin Nickel and Electroless Nickel. Satin Nickel is used for furniture, store fixtures, lighting and plumbing parts. It is available in three types of glossy, semi-glossy and flat.
Electroless Nickel, has 100 percent uniformity of plate thickness on all accessible internal and external areas. Exceptionally good for salvage purpose. Heat treatment at 500′f for one hour should result in coastings with a Vickers hardness of 850 = 150 for class 2 applications. Note: class 2 coating should be applied to those alloys which would be affected by this heat conditioning.
Silver plating is a practice that is done for a variety of reasons, on both individual and commercial levels. Silver plating is sometimes added to other metals simply to enhance the aesthetic appeal of the item. It is also often used as a way of increasing the conductivity of another metal, particularly in electronic devices.
Two basic types of silver are available for household use: solid silver and silver-plate. Solid silver is the best bet if planning to make a major investment in jewelry, flatware or serve ware that you will use for years. Silver plate, however, is a suitable alternative for household items you won’t use much or keep for long. Silver plate is significantly less expensive, making it easier to afford beautiful pieces without the high cost.
Antique Silver – Trophy – Football Player White matte to very bright in appearance. Good corrosion resistance, depending on base metal. Will tarnish easily. Hardness varies from about 90 Brinnel to about 135 Brinnel depending on process and plating conditions. Solderability is excellent, but decreases with age. Best electrical conductor. Has excellent lubricity and smear characteristics for anti-galling uses on static seals, bushings, etc.