Copper is mostly used as a decorative coating. This particular coating provides protection of the magnet from corrosion in ambient air, but is less than nickel. The prolonged life of this coating is not as good. So depending on the application especially as it relates to friction the copper can rub off over time. Copper is not a protective coating from humidity, water, or salt water. The standard thickness of this coating is 8-10 microns and the max working Temp is approximately 200C.
For more information about our coatings please click here to view our coatings chart on our sister company site - SM Magnetics. SM Magnetics is the innovative and solutions-oriented magnetics side of our business. Our knowledge and expertise is in permanent magnets and magnetic assemblies. We handle everything from prototype to production.