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How to choose a suitable magnet?

Source: Notetime: 2012-12-26 13:23:34 click: 1366

  At present, there are mainly 5 kinds of magnetic materials for selecting, according to the arrangement of magnetic strength, they are the rubber magnets, ferrite magnets, AlNiCo magnets, SmCo magnets and NdFeB magnet.

  Following describes that each kind of material properties can help you select the appropriate magnet.

  The rubber magnets:

  Magnet material like rubber, which can be folded, rolled, using scissors cut, color dark brown. Surface can also be affixed to PVC adhesive tape or glue. Each volume maximum width of up to 75mm, long 100m, the standard thickness of 1.5mm. film maximum width of up to 600mm, long 30m, the standard thickness of 0.5 and 0.75mm. The magnet can be made of two strips of adhesive to facilitate the use of. Crafts, signs, display panels, magnetic calendar, business cards, phone book.

  Ferrite magnets:

  It is the most widely used magnets, with cheap price, but rubber magnet is relatively strong. The material is hard, brittle, the surface of the deep gray. Wafer shape, circular, square, tile shape. There are a variety of sizes to be available for selection.

  AlNiCo magnets:

  It was originally applied in the technical field of magnetic materials. it can be applied at very high temperatures- nearly 500 degrees celsius. After processed, surface shows bright color like stainless steel. Wafer shape, cylindrical, square, horseshoe shape.

  SmCo magnets:

  Rare earth magnet, its material is highly brittle, but can resist high temperature, and can be used under the conditions of 300 degrees. Wafer shape, circular, square, tile shape. There are a variety of sizes being available in high technology and high temperature environment.

  NdFeB magnet:

  High performance rare-earth magnet is not as crisp as SmCo, but use temperature is not higher than samarium cobalt magnet. Under the condition of normal temperature, it is also easily oxidized, so the surface needs to be plated. Wafer shape, circular, square, tile shape. There are a variety of sizes being available.

from:http://www.htmagnets.com/newsd-nid-100.html