How are neodymium magnets rated?
Neodymium magnets are all graded by the material they are made of. As a very general rule, the higher the grade (the number following the ‘N’), the stronger the magnet. The highest grade of neodymium magnet currently available is N52. Any letter following the grade refers to the temperature rating of the magnet.
What is the n number in neodymium magnets?
The magnet grade or N rating refers to the Maximum Energy Product of the material that the magnet is made from and it refers to the maximum strength that the material can be magnetized to permanently hold. Generally speaking, neodymium magnets range from N35 to N52 in grade.
What are the different grades of neodymium magnets?
The most common grades of Neodymium magnets are N35, N38, N40, N42, N45, N48, N50, N52, and N55. For Samarium Cobalt (SmCo) Magnets, the BHmax will range from 16 MGOe to 32 MGOe. Again, like neodymium magnets, the higher the number, the stronger the magnet.
What does N mean for magnets?
The Neodymium magnets have a simple nomenclature. They all start with “N” which simply stands for “Neo” (industry simplification of Neodymium) and is followed by a two digit number. This number represents the maximum energy product in Mega-Gauss Oersteds (MGOe) where 1MGOe (cgs units) equals 7958kJ/m3 (SI units).
Does the size of a magnet affect its strength?
Quite simply stated, yes. The shape of a magnet does affect its strength. If a magnet has a more pointed end, that end will be stronger than the rest of the magnet. This is because the shape affects the distribution of the magnetic energy in the space it occupies.
How much neodymium is in a magnet?
Typical composition of NdFeB alloy
| Main Elements within NdFeB | Percentage by weight |
|---|---|
| Neodymium (Nd) | 29% – 32% |
| Iron (Fe) | 64.2% – 68.5% |
| Boron (B) | 1.0% – 1.2% |
| Aluminium (Al) | 0.2% – 0.4% |
What is the smallest neodymium magnet?
We have the ability to make small neodymium micro magnets less than 0.2 mm. Our tiny micro magnets have been used in many consumer electronics and medical applications.
What does the N mean for magnets?