Magnet Pull Strength

Magnet pull strength

The pull strength of a strong magnet is generally determined by its pull force and magnetic field strength.

Generally, the pull strength of magnets will be indicated in the product parameter information of magnets. Magnet factories usually use the following two methods to identify:

1. Pull force

Pull force is a measure of the strength of a magnet. The pull force of the magnet is measured in kilograms (kg) or newtons (N) by a pull force tester.

Test tool: Pull force tester

With this instrument, the magnet is separated from the low-carbon steel plate for direct contact and direct pull. The steel plate surface shall be smooth and clean. The force to pull out the magnet should be perpendicular to the surface.

The strength of the magnetic field, rather than the size of the magnet, determines the strength of the strong magnet. Compared with small magnets, large magnets do not necessarily pull stronger than small magnets.

2. Magnetic field strength

The magnetic field intensity units of strong magnets are Gauss and Tesla. Gauss and Tesla measure the density of magnetic field on the surface of permanent magnets, also known as magnetic induction of magnets. Usually for more accurate.

To measure the intensity of the magnetic field, we will use a Gauss meter. One Tesla is equal to 10000 Gauss.


Measuring tool: Gauss meter


Permanent magnet magnetic induction measuring instrument is Gauss meter. Gaussmeter works according to Hall effect, which is the place where the current passes through. When it accumulates, it makes itself equal to the magnetic field, and this accumulation will produce a readable.


Gauss meter can detect the voltage. It should be noted that Gauss meters of different countries or brands may have errors in measurement.