Is neodymium the strongest magnet?

Yes.neodymium magnet is the strongest magnet.

We can test the surface gauss on the magnet with gauss meter.

And the magnetic property Br can also reflect it.

Please check it for different magnets as following.

You can see the neodymium magnets are the most powerful.  

They are widely used for magnetic lifters.wind generators.traction motors and servo motors.

Our company can custom made the magnets for you.Please send me email for price.