There are many different kinds of magnets, and they come in different sizes, shapes, materials, and strengths. They all generate a magnetic force that allows them to attract certain metals. However, some magnets can't even hold a piece of paper on a refrigerator, while others can lift heavy objects high up. So what determines the strength of a magnet?

1. Material type

The material of a magnet directly affects its magnetic strength. Common magnetic materials include neodymium iron boron, samarium cobalt, ferrite, and aluminum nickel cobalt. Among them, neodymium iron boron is currently the strongest permanent magnet with an extremely high magnetic energy product.

2. External magnetic field

To turn a substance into a magnet, it must be exposed to the magnetic field of an existing magnet. The stronger the external magnetic field applied, the stronger the magnet produced.

3. Size specifications

Magnets with larger volumes usually produce stronger magnetic fields.

4. Magnetization direction

The magnetization method of a magnet (such as radial or axial) affects its magnetic field distribution and application effect. The core of magnet strength lies in material properties and magnetic parameters, and is also affected by shape, size and environmental factors.

In actual selection, these factors should be considered comprehensively according to application requirements. Our company can provide rare earth neodymium magnets and ferrite magnets, samarium cobalt magnets, and radial multi-pole magnets of various sizes, shapes and strengths. We are happy to help you find the right magnet for your project, welcome to consult.