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Anti-tarnish for stain free copper plated surface on CRS?

Q. Hi,

many copper components are replaced by copper plated steel components in most of electrical applications like contactors, circuit breakers, etc..

But it has become a tough task to get stain free copper plated surface. Coating thickness is 5 ~ 10 microns.

Any good anti tarnish to meet this.

The process: Cold Rolled steel coils - stamped - Alkaline copper plated(barrel) - Anti tarnish coated - Centrifugal Air drying

Many thanks in advance for your help

MK Prasad
Plating shop employee - Bangaluru, India
March 10, 2011

"The Chemistry of Benzotriazole Derivatives"

on Amazon or eBay
or AbeBooks
(affil link)

A. Many people use benzotriazole ⇦ on eBay or Amazon [affil link] as an antitarnish/ corrosion inhibitor for copper and copper alloys. You should be able to find a local supplier.

Lyle Kirman
consultant - Cleveland Heights, Ohio

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