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The sample shows a chemical nickel coated NdFeB small cylindrical magnet with N42 grade of magnetic properties, requires magnet N pole scribe marking, 2mm diameter, 2mm thickness, axial magnetization, the difference with conventional nickel is not obvious from the appearance but it is more suitable for use in wet, acidic or alkaline environments....
Top hat magnets, also called step magnets, big and small head magnets, we can understand that two round magnets with different diameters are glued together, represented by the large diameter D1* thickness + the small diameter D2* thickness, mainly used for electronic products, Industry, the function is the card position or other special requirements....
This is a neodymium magnet with a diameter of 12mm. What sets it apart from other neodymium magnets is its coating. The magnet is coated with black nickel, which has a charcoal or bronze glossy appearance. Adding black dye during the final nickel plating process of triple nickel-copper-black nickel, it is not completely black like the epoxy coating and still shiny, much like a normal nickel-plated magnet...
