Neodymium magnets are the most powerful permanent magnets available today. These magnets are so versatile that they can be found in almost any industry. Not only are they highly magnetic, but they can be made into almost any shape.
The coercivity of neodymium magnets depends on the grade you choose. While many people know that grades range from N35 to N52, there are actually many more to choose from. If you see a letter after the number, such as N45SH, these letters indicate the coercive level of the magnet. The number after the letter N (such as N45) represents the magnetic force, and the larger the number, the stronger the magnet.
N45SH Performance parameters
Operating temperature: 150 degrees Celsius
Coercivity Hcb: ≥ 12.6kOe
Remanence Br: 13.2-13.8kGs
Maximum energy product BHmax: 45MGOe
Demagnetizing curve of N45SH
N45SH magnet temperature
N45SH is one of the brands of high temperature resistant sintered NdFeb magnet. The maximum energy product is 45MGOe and the intrinsic coercivity (Hcj) is 20kOe. 20kOe is indicated by the suffix "SH" in the grade symbol, and the maximum operating temperature for permanent magnets of this type is 150°C. (The actual maximum operating temperature depends on the geometry; 150°C is used here for illustrative purposes.)
SH - Maximum temperature 150 °C
N30SH, N33SH, N35SH, N38SH, N40SH, N42SH, N45SH, N48SH, etc
Similar to this high temperature resistance sintered NdFeb magnet, used in the motor industry