High-performance neodymium magnets are prone to corrosion when they don't have an additional coating. The majority of our range of neodymium circular disc magnets are coated with a triple layer of nickel, copper and nickel which gives them their smooth silver finish and also provides superior resistance to corrosion. In this section you will find our whole range of neodymium circular disc magnets plus ceramic and samarium cobalt magnets that also have a nickel coating.
