What is Strong NdFeB Magnet Made of?


    If you're browsing our website, you undoubtedly have an interest in magnets, but you might not have heard of a strong NdFeB magnet. A NdFeB magnet is the strongest known type of permanent magnet, and it's one we supply for a variety here at Ningbo Tengxiao Magnetic Industry Co., Ltd. . Let's dive in a little deeper and learn more about these exceedingly strong magnets and how they can be used.

    What Are Strong NdFeB Magnet?

    These are not your average refrigerator magnets! Strong NdFeB magnets are the strongest permanent magnets available and, even if you've never heard of them before, you probably use them every day. They're sometimes called neodymium, or Neo magnets, and despite being so strong, they're also lightweight, which is why they're popular for a wide variety of applications. It's hard to believe, but without this type of rare earth magnet, many of the technological advances that have taken place over the past few decades would not have been possible!

    How Strong Are NdFeB Magnet?

    Very strong. They will amaze you! They're so strong that they have replaced other types of magnets in many applications. For example, they are over ten times stronger than ceramic magnets, so you might replace a ceramic magnet with a much smaller NdFeB magnet and generate the same (or more!) holding force. Beware - they're also so strong that even small neodymium magnets can cause bodily harm. We've even heard of larger neos breaking bones. Handle with care! You can find more details about the strength in gauss or pounds of holding force of specific magnets using our magnet calculator tools.

    What Are NdFeB Magnet Made Of?

    NdFeB magnets are made primarily from an alloy of neodymium, iron, and boron. The exact composition can vary depending on the strength needed and what that magnet is being used for. There are two main manufacturing types for NdFeB magnets: sintered and bonded.

    Sintered NdFeB magnets are made by heating the alloy components in a furnace, then this mixture is cast into molds and cooled to form ingots which are ground into a fine powder and pressed into molds. The molds of powder are sintered to become dense blocks. ( Sintering is the process of compacting and forming a solid mass of material by heat or pressure without melting it to the point of liquefaction.) The material is cut into its final shape, coated or plated, and then magnetized.

    Bonded NdFeB magnets combine neodymium alloy powder with a polymer binder. The components are pressed or extruded to make more complex shapes and magnetization powders than are typically available in sintered magnets.

    Thanks for reading our article. Ningbo Tengxiao Magnetic Industry Co., Ltd. not only has a strong NdFeB magnet but also an office magnet and other products. Welcome customers at home and abroad to come to discuss cooperation, we will serve you wholeheartedly.