Tips to Determine Magnet Strength
Magnets come in varying sizes, shapes, and levels of strength. This can sometimes be confusing when deciding how strong of a magnet you need for a project. However, there are a few key considerations that may help to guide in the decision-making process.
Here are 3 ways to help you determine how strong a magnet is:
Size and Shape
When it comes to magnets bigger doesn’t necessarily always mean stronger. A lot of other factors determine a magnet’s strength, but size and shape should still be considered. For example, if you are making fridge magnets from heavy materials, strong disc shaped magnets that have a similar but slightly smaller surface area as the materials you are using are generally optimal.
Neodymium magnets are labeled with a grade, an N rating that signifies a magnet’s level of strength. For example, N ratings range from the lowest strength, N27 to N64, with the most commonly used magnets being a N48 and N64 being theoretically the strongest grade. Essentially, the higher the N rating, the stronger the magnet.
Materials and Usage
Magnets can vary in type as well. Permanent magnets do not require an energy force because they are powered by natural magnetism in the environment. If you are using magnets for a DIY project, like fridge magnets, then you’ll be using permanent magnets. The most common are neodymium magnets, an alloy of neodymium, iron, and boron, and the second most common are samarium cobalt magnets.
If you still would like some assistance in choosing the right magnet, feel free to contact us. We are always happy to lend our magnet expertise to customers and help them make the best decision.