More about Magnetization and the Quality

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The number (e.g. 40, 42,45) corresponds approximately to the maximum energy product of the magnet (in MGOe). The letter N in front of the digits stands for Neodymium and have a maximum operating temperature of 80°C. The letters after the numbers correspond to a maximum use temperature of M=100 °C, H=120 °C, SH=150 °C, EH=180 °C and UH=200 °C. If there is nothing behind it, this is automatically 80 °C.

When we talk about the “strength” of a magnet, we usually mean either the holding power when in direct contact with a metal plate, or the attraction to a piece of iron (or other magnet) at a certain distance. The “strength” does not depend solely on the magnetic material used.

Equally important is the volume of the magnet, the shape of the magnet, the proportions of the magnet (e.g., the ratio of diameter to thickness for a magnetic disc) as well as the combination with other materials, e.g., whether the magnet is mounted on a piece of metal or in a metal pot or is freestanding.

Something similar applies to the operating temperature. The indicated maximum temperature can only be applied without problems if the proportions of the magnet are optimal. For example, when a magnet is very thin in relation to its diameter (or length), the maximum temperature is reached more quickly.

If you take two magnets from our range, which have different size and magnetization, the difference in volume is usually more decisive for the strength of the magnet as the difference in magnetization. Therefore, the larger magnet is usually the stronger one, even when the feature number of the magnetization is smaller. The exact correlation between this prefix and the physical magnetic values can be found in the table.