Strength of Neodymium Magnets
Neodymium magnets are over 10x stronger than the strongest ceramic magnets(AlNiCo Magnets). If you've never handled neodymium magnets before, you will be amazed at their strength. If you are currently using ceramic magnets in your project, you could probably use a much smaller neodymium magnet and have greater holding force.
For the relative strength of each of our magnets you can refer to: Magnets Table
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