How does the holding force behave with ageing of magnets

How long the magnetic holding force of magnets lasts depends very much on external factors and the way the magnets are used. A distinction must also be made between the type of magnets involved.
If the external circumstances are right, the magnetic holding force lasts almost indefinitely.
We have listed important negative factors for the respective magnet type:

 

Neodymium magnets

- Temperatures: Most neodymium magnets are designed for temperatures of up to 80 degrees Celsius. This temperature should not be exceeded. There are a few (customised products are of course possible) that can withstand temperatures of up to 150 degrees Celsius. Minus temperatures are no problem for neodymium magnets
- Weathering: Most neodymium magnets are nickel-plated. Use in permanently damp conditions is not recommended. This often leads to corrosion
- Impacts / shocks: Very strong impacts can partially, or completely demagnetise magnets
- Very strong other magnetic fields: Neodymium magnets have a very strong magnetisation. However, there are electromagnets that can negatively influence the magnetisation of neodymium magnets
 

Magnetic tapes and magnetic sheets

- Temperatures: Both magnetic tapes and magnetic sheets should not be heated below -20 degrees Celsius and not above 80 degrees Celsius.
- Other magnetic fields: You should always store magnetic tapes & magnetic sheets separately from other magnets made of ferrite or neodymium. Electromagnets should also not be operated in close proximity.
- Shocks / vibrations: Like all other magnets, strong impacts can demagnetise magnetic tapes or magnetic sheets.
 

Ferrite magnets

- Temperatures: Ferrite magnets may be operated at temperatures from -40 degrees Celsius to 250 degrees Celsius.
- Impacts / shocks: Like all other magnets, strong impacts can demagnetise magnets made of ferrite.
- Other magnetic fields: Neodymium magnets and electromagnets can demagnetise ferrite magnets. Please always store neodymium magnets and ferrite magnets separately.