How can I use magnet information?
For a given magnet size, you can estimate how much magnetic flux different materials will project at a certain distance. You can also use this information to compare one material with another.
Example: How much more flux will a grade 35 neodymium magnet produce at a given distance compared with a grade 5 ceramic magnet? Simply divide the Br of neo 35 by the Br of ceramic 5 (12300/3950) to get 3.1. This means that neo grade 35 projects 3.1 times the flux that an equally sized ceramic grade 5 magnet would produce at a given distance.
Based on the flux required at a fixed distance from the magnet, you can use this information to estimate the magnet volume needed for different magnet materials.
Example: What volume of ceramic 5 magnets would produce the same flux at a given distance as a neodymium 35 magnet? Simply divide the BHmax of neo 35 by the BHmax of ceramic 5 (35/3.6) to get 9.7. This means the volume of the ceramic 5 magnets would need to be 9.7 times the volume of the neo 35 magnet to achieve the same flux.
