How long can magnetic force of NdFeB magnet last? By china-magnets-source-material.com

Neodymium magnet has high coercive force. 

 

That means it doesn't lose its magnetic force and change magnetic property under ordinary circumstances. 

 

We assume that the environment is stable, it’s just few lose on magnetic force even after a long time use. 

So in an actual application, we can ignore the influence of time factor on magnetic force.