Neodymium Magnets are really Strong Magnets made by an alloy of neodymium, iron and boron (NdFeB). Neodymium is a rare-earth element (REE), also called rare-earth metal or (in context) rare-earth oxide. Even at their smallest size Neodymium Magnets have a Really High Magnetic Strength. But….
How strong are Neodymium Magnets?
Neodymium Magnets are the strongest commercially available Magnets. Their adhesive force is way stronger than other Magnets like Ferrite ones. But even among Neodymium Magnets there are different levels of strength, represented by their Grade.
This Grade is specified by a number (usually from 35 to 52) that represents the Magnetic Strength of the Neodymium Magnet, which is linked to the magnetic flux output per unit of volume. Higher values mean stronger magnets. For reference, a small N45 3 x 2mm Neodymium disc has a strength of attraction of 0,18 Kg, whereas a N48 has 0,25 Kg (39% more !!!).
Have a look at this simple chart with the adhesive force of magnets with different sizes, grades and materials:
Magnets Adhesive Force Reference Chart
Neodymium and Ferrite Magnets Adhesive Force
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Do you want a detailed comparison between Neodymium and Ferrite Magnets?
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