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    • Neodymium Pot Magnets
      • Neodymium Flat Pot Magnets
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    • Rubberised Pot Magnets
      • with Hole / Countersink
      • with Internal Thread
      • with External Thread
      • with Threaded Bushing
      • with Cylindrical Grip
      • for Screw Mounting
      • Other Versions
    • SmCo Pot Magnets
      • SmCo Deep Pot Magnets
        • SmCo Pots with Fitting Tolerance h6
      • SmCo Round Base Magnets
    • Alnico Pot Magnets
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Magnet Materials

HomeMagnet Materials

Magnet Materials Overview

We stock and supply standard and premium grades of all commercially available permanent magnet alloys.

Neodymium Iron Boron

A class of Rare Earth material, available in both sintered and bonded forms. Major characteristics: the most powerful (highest energy product) class of magnet material commercially available today. High Br, relatively high Hc, high BHmax, lower in cost than Samarium Cobalt, temperature sensitive, and susceptible to oxidation. With careful design, some grades will function up to a maximum of about 200°C. Energy product ranges from 10 MGOe to about 53 MGOe. Relative Cost Index (by weight): 40.

Samarium Cobalt

A class of Rare Earth material, available in both sintered and bonded forms. Major characteristics: High Br, high Hc, relatively high BHmax, higher in cost than Neodymium Iron Boron, highly resistant to oxidation. Most grades function well up to about 300°C. Energy product ranges from 18 MGOe to about 33 MGOe. Relative cost index (by weight): 60.

AlNiCo (Aluminum-Nickel-Cobalt)

An alloy of aluminum, nickel, and cobalt, Alnico magnets have been popular since the 1930s. Alnico magnets are available in cast and sintered forms. They exhibit high Br, but low Hc, and BHmax in the 5 MGOe range. Of all the different types of magnets, they are the most temperature stable & may be used with no significant losses up to about 500°C. They are relatively easily demagnetized by opposing magnetic fields, and resist oxidation well. Energy product ranges from 1.4 MGOe to about 7.5 MGOe. Relative cost index (by weight): 25

Ceramic (Ferrite)

Composed of Barium or Strontium Ferrite, these materials exhibit good resistance to demagnetization, & are the lowest cost materials available today. Sintered Ferrite magnets are hard & brittle, and extensively used in consumer products. You are probably familiar with ferrite magnets, often used as refrigerator magnets. Energy product ranges from 1.1 MGOe to about 4.5 MGOe. Relative cost index (by weight): 1.5.

Flexible

A special form of Ferrite or Rare Earth materials- flexible magnet materials are manufactured by binding ferrite or Rare Earth magnet powders in a variety of carriers, such as vinyl. This material can be bent, twisted, coiled, and otherwise easily fabricated. A variety of grades are available, from 0.6 MGOe, to about 1.6 MGOe in Ferrite based materials and up to about 6 MGOe in Rare Earth based materials. Relative cost index (by weight, for bonded ferrite):

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Feature Products

  • NdFeB Pot Magnets
  • Ferrite Pot Magnets
  • Alnico Pot Magnets
  • SmCo Pot Magnets
  • Rubber Coated Pot Magnets

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