![]() And Neodymium is alloyed with Iron –a transition metal. ![]() Samarium is alloyed with Cobalt –a transition metal. They are called are rare earths, because Samarium and Neodymium are both found in the Lanthanide series of metals on the Periodic Table, so the properties and crystal structures of these magnets are very similar to each other. Samarium Cobalt ( SmCo5 or Sm2Co17) and Neodymium-Iron-Boron ( Nd2Fe14B) are both Rare Earth Magnets –the strongest known rare earth permanent magnets. What are RareĮarth Magnets -and What are They Used For? As with many engineering materials, there are some finer details to consider in any trade study between two materials.ĭo you like this post? Many readers also like our post on Neodymium vs Ferrite Magnets. There are other important similarities and differences between SmCo and NdFeB magnets we will examine more closely, but these are the biggest considerations. ![]() They are both very strong magnets with very high BH Max (Maximum Energy Product) and high Coercivity (resistance to demagnetization) and they are both commercially important on a large and growing scale. SmCo and NdFeB magnets also have important similarities. Neodymium magnets have a much stronger magnetic field –with the highest BH Max of any permanent magnet available today –and they are cheaper than SmCo. So what are the basic differences between SmCo and NdFeB? SmCo magnets operate better than NdFeB magnets at higher temperatures and in more corrosive environments than Neodymium magnets. Here we break down the important similarities and differences so you can quickly decide which is right for your application. Many people want to understand how to use them, so we wrote this guide. ![]() Samarium Cobalt magnets and Neodymium Iron Boron magnets are important Rare Earth Magnets. ![]()
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