What are the grades of neodymium magnet?

     Many friends will use strong magnet, but they do not know what N52, N42, N35 these numerical symbols represent, and some friends who buy N52 strong neodymium magnets know that represents strong, but the specific meaning they do not understand.

     Here, we will introduce what is the grade of neodymium magnets from two aspects.

     First, the grades of sintered NdFeb, which use N to represent neodymium, starting with N, followed by some specific numbers to form a combination, such as N35, N42, N45, N52, etc., in general, higher numbers are associated with stronger magnets.The numbers are derived from the maximum energy product of the permanent magnet material, expressed as MGOE, which represent the strongest point on the magnetic regression curve or BH curve of the magnet.

     Usually can buy international performance grades from N35 to N52, it is easy to conclude that N35 neodymium magnets are the lowest grade, many people may feel that N35 grade neodymium magnets are not strong, so it is wrong, in fact, the magnetic is very strong, suitable for different fields, most of the market are N35 magnets.

     On top of the N35, the N42 grade provides high performance at a favorable price and will be 20% more magnetic than the N35 grade; Grades above N42 tend to be more expensive, and the price increase is not proportional to the improvement of performance, a good example is N52, which is 20% more magnetic than N42 but the price is usually more than twice that of N42. We would like to say that the appropriate grade is the best choice.

     Second, high temperature Ndfeb magnet grades, that is, at the end of the magnet grade with special letters to indicate, such as N45SH, N42M, N35EH, etc., these letters represent the temperature rating and maximum operating temperature that the magnet can withstand before it begins to permanently lose its magnetism, because the Neodymium magnets are actually not high temperature magnets, but have high temperature resistance characteristics. There are special grades of materials that can withstand different ranges of temperatures, so letters are added at the end to distinguish them.

     The above is an introduction to the grade of neodymium magnets, I hope it can help you.