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  4. Permanent magnet Rare earth magnet samarium cobalt (Nippon Magnet Industry Co., Ltd.)
Permanent magnet Rare earth magnet samarium cobalt-Φ2.5×8
Permanent magnet Rare earth magnet samarium cobalt-Nippon Magnet Industry Co., Ltd.

Permanent magnet Rare earth magnet samarium cobalt
Nippon Magnet Industry Co., Ltd.

About This Product

■Features

Rare earth magnets have rapidly grown to surpass ferrite magnets in terms of production value, and because their magnetic energy is much stronger than other magnets for the same size, they have ridden the wave of lighter, thinner, shorter, and smaller magnets and are being used in a wide range of cutting-edge fields. It has now become an indispensable magnet for high-tech products. Rare earth magnets are named because they contain rare earth elements such as samarium and neodymium, and the two main types are samarium cobalt and neodymium.

■Advantages and disadvantages of samarium cobalt

Samarium cobalt, which was known as the world's strongest magnet until the advent of neodymium, has a lower residual magnetic flux density and lower temperature coefficient of coercive force than neodymium, and has excellent thermal stability. Additionally, since it has better corrosion resistance than neodymium, it can be used without surface treatment such as nickel plating unlike neodymium. On the other hand, the disadvantages are that the raw materials samarium and cobalt are unstable in supply and expensive, and the cost is relatively high considering their magnetic properties. Additionally, due to its low mechanical strength, it is easily chipped and difficult to handle.

■Magnetic properties of rare earth magnets

Magnetic property values ​​are representative values ​​and do not guarantee quality. It varies depending on shape, dimensions, manufacturing conditions, usage environment conditions, etc.

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    Permanent magnet Rare earth magnet samarium cobalt

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1 Models of Permanent magnet Rare earth magnet samarium cobalt

Image Part Number Price (excluding tax)
Permanent magnet Rare earth magnet samarium cobalt-Part Number-Φ2.5×8

Φ2.5×8

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About Company Handling This Product

Nippon Magnet Industry Co., Ltd.

  • Japan

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