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Why does the coating of my magnets chip?

To protect our neodymium magnets from corrosion, they have a thin coating of nickel-copper-nickel. This coating can crack or chip due to collision or strong pressure. Heavy blows can even break the magnets. This is not a quality defect, but rather a typical product feature: The material neodymium-iron-boron is very magnetic but also brittle, because it is sintered from metal powders. Therefore, careful handling of the magnets is recommended.
We also draw attention to this problem in our safety tips, which are enclosed in all your orders. Below, we compiled a few tips on how you can protect the magnets.

Tips on how to protect magnets

A note regarding screw-on magnets

We carry screw-on magnets of many different shapes and sizes in our assortment. These magnets are also made of neodymium, and the material is therefore brittle. We recommend a maximum tightening torque of 2 Nm when fastening these magnets.