The “N value” of a neodymium magnet refers to its grade and is a measure of the magnet’s maximum energy product, specifically indicated in Mega-Gauss Oersteds (MGOe). This value tells you about the strength of the magnet:
- The letter “N” stands for Neodymium, indicating the magnet is an NdFeB (neodymium-iron-boron) type.
- The number following N (such as N35, N42, N52) represents the maximum energy product (BH)max. A higher number means a stronger magnet, capable of producing a greater magnetic field for its size.
- For example, N42 means the magnet has a maximum energy product of 42MGOe; N52 is 52MGOe, making it stronger than N42 or N35.
Practical Implications
- Higher N-value = stronger magnet.
- The most common grades in use are N42 for general applications (good balance of cost and strength) and N52 for maximum strength in compact spaces.
- We sell magnets in the range of N35, N40,N42, N45, N50 and N52
Example Table
| Grade | Strength (MGOe) | Max Temp (°C) | Use Case |
|---|---|---|---|
| N35 | 35 | 80 | General purpose |
| N42 | 42 | 80 | Widely used |
| N50 | 50 | 80 | Close to Maximum compact strength |
| N52 | 52 | 80 | Maximum compact strength |
In summary, the N value of neodymium magnets tells you how much magnetic energy the material can hold permanently, with higher values meaning stronger magnets.