Neodymium Magnets – also called Neodymium Iron Boron Magnets, Rare Earth Magnets, Neo Magnets, or NdFeB.
Neo Magnet magnetic strength is indicated in the grade by the number after the “N”. Higher numbers indicate stronger magnets. The Intrinsic Coercivity (Hci) of the material is indicated by the 1-2 letters at the end of the grade (suffix).
The higher the Hci, the higher the temperature the material can be exposed to before the magnet will start to show permanent losses in output.
Higher Grade Number = Higher Temperature
See our Neodymium Material Grade with Temperature Chart below for the maximum temperature. This is the general temperature that can be used to determine the max operating temperature in which a neo magnet can be effectively used without losing any of it’s magnetic strength.
This loss of strength is not reversible, so care must be taken to avoid using Neodymium magnets in applications that exceed the recommending maximum operating temperature.
Neodymium Magnet Grades and Temperature
At AZ Industries we manufacture the following grades of Neo Magnets
Neodymium Grade Suffix / Temperatures
Please use the chart below as a guide only, as the specific performance of a neodymium magnet will depend on the exact environmental conditions and temperature fluctuations. For grades that do not have not letter after them, the temperature grade is assumed to be standard neodymium.
|Neodymium Grade Suffix Letter||Maximum Temp Fahrenheit / Celsius|
|N||176°F / 80°C|
|NM||212°F / 100°C|
|NH||248°F / 120°C|
|NSH||302°F / 150°C|
|NUH||356°F / 180°C|
|NEH||392°F a/ 200°C|
In addition to the selecting the grade, there are several other material characteristics that need to be considered before using a neodymium magnet in your specific application.
The length vs diameter ration as well as surrounding demagnetizing fields can affect performance. When selecting a neodymium magnet grade that approaches the maximum limits for temperature, the magnet load line should also be considered.
If you need assistance with purchasing wholesale neo magnets or a choosing a neodymium grade, please do not hesitate to contact us.