The most powerful magnet at present is a rare earth magnet, and neodymium iron boron is the most powerful magnet in rare earth magnets. However, in an environment above 200 degrees Celsius, cobalt is the most powerful magnet.
Magnets, should be called magnetic steel, English Magnet, magnetic steel is now mainly divided into two categories, one is soft magnetic, one is hard magnetic;
Soft magnetic including Silicon steel sheet and soft magnetic core; Hard magnets include aluminum, nickel and cobalt, cobalt, ferrite, and neodymium ferroboron. Among them, the most expensive is the cobalt magnet steel, the cheapest is the ferrite magnet steel, and the highest performance is the neodymium ferroboron magnet steel. However, the performance is the most stable. The best temperature factor is nickel and aluminum.
Cobalt magnetic steel, users can choose different hard magnetic products according to different needs.