Which kind of magnet is weak?

Magnets have strong and weak magnetism. Magnets of different materials have different magnetism. We all know that neodymium iron boron magnets (silver white) have strong (large) magnetism. What about those magnets with weak (small) magnetism?

1526874145187370 - Which kind of magnet is weak?

Rubber magnet is mainly made of ferrite powder mixed with rubber or resin by pressing. Its main characteristics are low hardness and good plasticity. It can be rolled up, folded and twisted, and does not affect the magnetism. It is widely used, such as toys, door seals, and magnetic car stickers on cars, to replace ferrite, which can not be realized.
Note: the rubber magnet also has the same and the different, like the sintered ferrite magnet, in the magnetic field is lower than the ferrite magnet.
Usually, the magnetic force of rubber magnet is 400-500gs, and ferrite is 700-800. If it is high, it can reach 1500GS and 1600gs.

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