Selection of Neodymium Iron Boron Magnets

Selection of Neodymium Magnets

Neodymium Iron Boron magnets are very strong but sensitive to changes in temperature. The selection of Neodymium magnet in your applications will depend on your working environment.

If you use the magnets at elevated temperatures, select the alloys that have a high intrinsic coercivity (Hci). While, if you use the alloy at lower temperatures (such as room temperature), you may select higher Br materials.

If the magnet is being used in adverse conditions, such as repelling positions in motors where repelling magnetic fields are being used to drive the rotor and similar applications, selecting materials with moderate or high coercivity is recommended. Applications where fields are being used to trigger sensors, switches, and similar applications may use lower coercivity magnets.

Do not use neodymium magnets in water or Oil (unless hermetically sealed), or you are prepared to accept a limited life.

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