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Zinc Electroplating

Electroplating Zinc

Zinc is a hard, brittle metal that is found in abundance in many parts of the world. Zinc electroplating offers an inexpensive alternative to precious metals such as gold, silver and platinum. Its relatively low cost makes the zinc plating process the top choice for companies looking for affordable corrosion protection. Addition corrosion protection can be achieved by applying organic top coats and passivation treatments to the zinc.

Zinc Electroplating

While zinc plating yields a silvery-gray finish, the color can be altered through passivation. Zinc passivates may be yellow, black or clear blue, and the application of lacquers can provide a protective seal. Zinc plating can be used with virtually any type of metal, but is most frequently applied to iron or steel surfaces. Typical zinc electroplating applications include coating nuts, bolts, washers and various automotive parts.

Zinc Alloy Plating

Zinc is often alloyed with other metals in the plating process, most commonly nickel and tin. A zinc-nickel alloy provides 10 times greater corrosion protection than zinc alone. The application of top coats and passivation treatments improves the performance of the finish and can exceed even the most demanding standards. A tin-zinc alloy also provides an effective safeguard against corrosion and is sometimes used as an alternative to cadmium plating.

When to Avoid Zinc Plating

One drawback of plating with zinc is that zinc coatings do not hold up well against acids or alkalis. In these situations, powder, plastic or e-coat is a better option.

Contact SPC to Learn More

Is our zinc plating service the best of our industrial metal finishing options for your business? Contact the experts at Sharretts Plating Company to find out for sure. We'll be happy to put our more than 80 years of industrial metal finishing experience to work for you. At SPC, we're perfectly positioned to be your long-term plating and finishing partner!