Pull force, also known as magnetic pull, is a measure of the strength of a magnet's magnetic field. It is the force that a magnet can exert on an object made of ferromagnetic material, such as iron, nickel, or cobalt. The pull force of a magnet is determined by the strength of its magnetic field and the size and shape of the magnet.
Often measured in pounds or kilograms, the pull force is the force required to pull that magnet straight free from a thick steel plate. The pull force also tells you the limit of that magnet's holding power.
Generally, any magnet with a pull force above seven pounds (3 kg) can pinch your fingers. Stronger magnets can be even more dangerous and should only be handled by experienced individuals. We always recommend hand and eye protection for large magnets.
Magnets stick best to ferromagnetic surfaces and do not stick to chrome, brass, aluminum, silver, gold, wood, plastic or tile. Attaching magnets to these surfaces is best accomplished with countersunk or self-adhesive magnets.
What Effects Pull Force?
While the pull force rating enables you to determine how much weight or tension a magnet will hold, there are several other factors to consider which can affect a magnet’s pull force.
Vertical vs Horizontal Placement
A magnet placed vertically, such as on the underside of a steel beam or table, will hold its listed pull force weight.
The composition, size and thickness of the steel can also affect the performance of a magnet. Different types of steel have different magnetic properties, and some types of steel are more magnetic than others. For example, low-carbon steel is generally more magnetic than high-carbon steel, and stainless steel is generally less magnetic than other types of steel.
Choosing the Right Magnet
It can be challenging to select the best magnet for your specific application due to the numerous factors that can impact a magnet's pull strength. Testing the magnet in your application is the best approach to learn whether it will perform as needed. You may always get in touch with our magnet experts if you have any questions or want assistance selecting the right magnet. We will be delighted to assist you in making the best magnet choice for your needs.
These magnets are so strong that it is difficult to separate them without using some kind of prying tool, my fingers alone are too weak to do it. They will do the job I purchased them for very well.
The magnets I received were shipped quickly and securely, and I had no issues with delivery. They were packed well and in good shape when I received them. I noticed no defect with the magnets and I I was able to use them exactly as I intended on back of a piece of jatoba for a magnetic knife strip. I routed a track to 1/8” and glued and epoxied the magnets in place. The magnets provide sufficient pull strength to hold knives without being too energetic about grabbing them from the hand. These met my need precisely and I would purchase again if I decide to make more of these magnetic knife holders.
I used the magnets on a wooden toy box for my grandson. Easy to install and the perfect strength. I will be buying different sizes for other projects.
Ordered these magnets for a project that I was working on. Received as stated & described, the magnets are what I was looking for. Will order from them again.
Used this for a hobby project I’m working on and the magnets held my project together very well. The finish on them were uniform and packaged them very well. They were shipped and received very timely and will be re-ordering more.
Good customer service, great price & quick to ship
I was hoping to find a strong, low profile magnet to use on my project - which is a restoration of a WWII Army Footlocker. I wanted to attach some old photos and postcards to the underside of the lid, but without using any permanent adhesives which may have affected my paint job. These worked perfectly!
Just what I needed and at the right price.....
Will purchase more when needed.
Have used before & reordered magnets for customized windows alarm contacts. Work fantastic & slim profile allowing no issues opening & closing windows.
me use these to stop 1/24 scale drag racing slot cars !!
1/2 x 1/8 Inch Strong Neodymium Rare Earth Disc Magnets N52 (24 Pack)
Magnetic knife board, that worked perfectly.