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Sura Magnets provides a wide range of different magnetic materials for meeting the industrial special requirements.
The magnetic materials can be organized into four main categories refering to method of manufacturing. The category Sintered Magnets also contains Ceramic Magnets and Compression Moulded includes Soft Magnet Materials.
More information about magnetic materials and magnetic design could be found in our user guides. You will find the user guides under the menu Support.
Main Groups:
 Sintered Magnets
Compression Moulded
Injection Moulded
Cast Magnets
Main Groups:
NdFeB Magnets
A class of Rare Earth material. 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. Some grades will function up to a maximum of degrees 210 C. Energy product ranges from 1.0 MGOe to about 50 MGOe.
SmCo
A Rare Earth magnet, 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 350 C. Energy product ranges from 18 MGOe to about 32 MGOe.
Ferrite Magnets
Composed of Barium or Strontium Ferrite, these materials exhibit good resistance to demagnetization, and are the lowest cost materials available today. Sintered Ferrite magnets are hard and brittle and are extensively used in consumer products. Energy product ranges from 1.1 MGOe to about 4.5 MGOe.
Alnico Magnets
An alloy of aluminum, nickel, and cobalt, Alnico magnets have been popular since the 1930s. Alnico magnets are available both in cast and sintered forms. Mainly used in applications where temperature stability is critical, Alnico magnets exhibit high Br, but low Hc, and BHmax in the 5 MGOe range.
They are the most temperature stable magnets of all magnet types, and may be used with no significant losses up to about 500 C. They are relatively easily demagnetized, resisting oxidation well. Energy product ranges from 1.4 MGOe to about 7.5 MGOe. |
