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How to choose the magnet you need

How to choose the magnet you need

At present, there are mainly 5 kinds of magnetic materials to choose from, which are rubber magnets, ferrite magnets, alnico magnets, samarium cobalt magnets and neodymium iron boron magnets in order of magnetic force from weak to strong.

A brief description of the properties of each material below can help you choose the right magnet.

The material of the rubber magnet magnet is very similar to rubber, it can be folded, curled, and can be cut with scissors, and the material color is dark brown. The surface can also be pasted with PVC tape or glued. The maximum width of each roll can reach 75mm, the length is 100m, and the standard thickness is 1.5mm. Magnets can be made with adhesive on both sides for ease of use. Crafts, sign boards, display boards, magnetic calendars, business cards, phone books and other ferrite magnets are the most widely used magnets. They are cheap, but have a stronger magnetic force than rubber magnets. The material itself is hard, brittle, with a dark grey surface. Disc shape, ring shape, square shape, tile shape. Available in a variety of sizes for crafts, suction pieces, toys, motors, speakers and more.

AlNiCo was the first magnetic material used in the technical field. Can be used at very high temperatures – nearly 500 degrees Celsius. After machining, the surface is bright like stainless steel. Disc shape, cylindrical shape, square shape, horseshoe shape, etc. Instruments, meters and high temperature environment samarium cobalt rare earth magnets, the material is very brittle, but high temperature resistance, can be used under the condition of 300 degrees Celsius. Disc shape, ring shape, square shape, tile shape. There are a variety of sizes to choose from high-tech fields and high-temperature environments NdFeB high-performance rare earth magnets, which are not as brittle as samarium cobalt, but the operating temperature is not as high as that of samarium cobalt magnets. It is also easily oxidized at room temperature, so the surface must be electroplated. Disc shape, ring shape, square shape, tile shape. There are various sizes to choose from NdFeB magnets are currently the highest performance magnets, and are increasingly used in non-technical fields, such as adsorption magnets, toys, jewelry, etc.