China Neodymium And Ferrite Magnets Manufacturer & Supplier 
People on the internet often ask if the magnetism of permanent magnets wears off. How many years will the magnetism last? How much magnetism will be lost if you use it for a year? And so on similar issues, today dongguan magnet factory NST xiaofu to introduce to you.
There are two main types of magnets: electromagnets and permanent magnets. Electromagnets are essentially switched magnets; they are magnetic in the presence of an electric current and lose their magnetic force when the current stops.
Round rare earth magnets with a small hole in the center
Permanent magnets are, as you might infer from their name, permanent magnets that generate and permanently maintain their own magnetic field, however, there are a number of factors that affect magnet strength.
So how long-lasting is their magnetism?
Generally speaking, under ideal conditions, a permanent magnet loses only a small percentage of its strength over a few years (i.e., about 1% over 10 years). This percentage is so small that it does not significantly change its power. However, there are a number of conditions that can cause a permanent magnet to lose its magnetism, such as temperature, environment, etc.
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