Mainly, the remaining magnetic, stubborn power and maximum magnetic energy accumulation. The following is only for reference

 Iron magnetic material, as the latest result of the development of rare earth permanent magnet materials, is called "magnetic king" due to its excellent magnetic properties.

The magnetic material of 料 iron boron is alloy of 钕, iron oxide, etc. Also known as magnetic steel.

 Iron boron magnetic materials are: N30 ~ N52; 30H ～ 50h; 30SH ～ 50SH; 28UH ～ 40UH; 30EH ～ 35eh, etc.

It is currently commonly used high magnetic magnets. Decided by the crystal structure.

Introduction: The third -generation rare earth permanent magnetic 钕 iron boron is the most powerful permanent magnet in contemporary magnets. Its BHMAX value is 5-12 times that of iron oxygen magnets, 3-10 times that of aluminum nickel cobalt magnets; its stubborn force is equivalent to 5-10 times of iron oxygen magnets, 5-aluminum nickel cobalt magnet 15 times, its potential magnetic properties are extremely high, and can suck a heavy object that is equivalent to 640 times its own weight.

Because the main raw material iron of the tin iron boron magnet is very cheap, the storage amount of rare earth is 10-16 times more than , so its price is much lower than that of the mackerel cobalt magnet.

The mechanical properties of  iron boron magnets are better than that of the mackerel and cobalt magnets and aluminum nickel cobalt magnets, and it is easier to cut and drill and complex shape processing.

The shortcomings of  are that their temperature performance is not good, and the use of magnetic losses at high temperatures is large and the highest working temperature is low. Generally, it is about 80 degrees Celsius. The maximum working temperature can reach 200 degrees Celsius in the specially processed magnet.

Because the material contains a large amount of tadpoles and iron, it is also a major weakness for rusting. Therefore, the tin iron boron magnet must be treated on the surface. Can electroplating nickel (ni), zinc (zn), gold (AU), chromium (CR), epoxy resin (Epoxy), etc.