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Magnet University

  • Strength of Neodymium Magnets

    Neodymium magnets are over 10x stronger than the strongest ceramic magnets(AlNiCo Magnets). If youve never handled neodymium magnets before, you will be amazed at their strength. If you are currently using ceramic magnets in your project, you could probably use a much smaller neodymium magnet and have greater holding force. For the relative strength of each of our magnets you can refer to: Magnets Table ...Read More>>>

  • What is demagnetization?

    The process of reducing or removing the magnetism of a ferromagnetic material. Rare Earth magnets have a high resistance to demagnetization, unlike most other types of magnets. They will not lose their magnetization around other magnets. However, they will begin to lose strength if they are heated above their maximum operating temperature, which is 176F (80C) for standard N grades. They will completely lose their magnetization if heated above their Curie temperature, which is 590F (310C) for standard N grades. ...Read More>>>

  • Specifications of Neodymium Magnets

    Physical and Mechanical Characteristics Density 7.4-7.5 g/cm3 Compression Strength 950 MPa (137,800 psi) Tensile Strength 80 MPa (11,600 psi) Vickers Hardness (Hv) 560-600 Young's Modulus 160 GPa (23,200 ksi) Recoil Permeability 1.05 μrec Electrical Resistance (R) 160 μ-ohm-cm Heat Capacity 350-500 J/(kg.°C) Thermal Expansion Coefficient (0 to 100°C) parallel to magnetization direction 5.2 x 10-6 /°C Thermal Expansion Coefficient (0 to 100°C) perpendicular to magnetization direction -0.8 x 10-6 /°C Magnetic Characteristics Material Type Residual Flux Density (Br) Coercive Force (Hc) I...Read More>>>

  • Magnetization Direction For Neodymium Magnets

    A magnet can be magnetized in a variety of directions. Anisotropic materials must be magnetically oriented during production. Therefore are inclined to a fixed orientation. Disc Cylinder Magnets, Ring Tube Magnets Orientation: Arc Wedge Magnets Orientation: ...Read More>>>

  • What are Rare Earth Magnets?

    Rare-earth magnets are strong permanent magnets made from alloys of rare-earth elements. Neodymium Magnets are a member of the Rare Earth magnet family and are the most powerful permanent magnets in the world. They are also referred to as NdFeB magnets, or NIB, because they are composed mainly of Neodymium (Nd), Iron (Fe) and Boron (B). They are a relatively new invention and have only recently become affordable for everyday use. Samarium cobalt (SmCo)magnets are another member of the Rare Earth magnet family, which have excellent temperature stability and corrosion resistance. ...Read More>>>

  • Glossary of Magnet Terminology

    Glossary of Magnet Terminology Common parameters of rare earth magnets: Material: the composition of magnets, like NdFeB(an alloy of neodymium, iron and boron) or SmCo(an alloy of samarium and cobalt) Shape: the physical shape of a magnet, like Disc, Cylinder, Block, Bar, Cube, Ring, Tube, Sphere, Ball, Arc Wedge, or custom-made shape as drawing Dimension: The physical size of a magnet including any plating or coating. Tolerances: An allowance, given as a permissible range, in the nominal dimensions of a finished magnet. The purpose of a tolerance is to specify the allowed leeway for variation...Read More>>>