uper Strong Black Epoxy Sintered NdFeB Disc Magnet are all made as Customer Design and as Special requirement.
Magnets grade: Full grade,from N35 to N50, from N Series to UH Series.
Magnets drawing with size and shape and different side view
Magnetism direction: Usually magnetized via diameter, if special magnetism direction, please show on the drawing in advance.
Magnets coating: Nickel, Zn, Black Epoxy, Black Nickel ,Nickel -Cu-Nickel,Ag, Au etc.
Quantities: More quantity ,more competive prices.
Epoxy-Copper-Nickel triple layer coated for maximum corrosion resistance and durability
3-layer coating (Nickel + Copper + Nickel and Epoxy + Copper + Nickel) vs. Epoxy single layer coating
Epoxy single layer coating is THE LEAST durable coating from our experience.
3-layer coating is much more durable than Epoxy single layer coating because Epoxy single layer coating is a thin layer of plastic and quicker to wear off, even a scratch can damage the coating easily.
More importantly, magnets with 3-layer coating have superior cracking and chipping resistance in comparison to magnets with Epoxy single layer coating. Customer beware of the magnets with the inferior Epoxy single layer coating.
Epoxy+Copper+Nickel 3-layer coating vs. Nickel+Copper+Nickel 3-layer coating
Epoxy + Copper + Nickel 3-layer coating has superior Corrosion Resistance and excellent adhesion to metal surface than Nickel + Copper + Nickel coating, this coating is ideal for bonding metal. Nickel+Copper+Nickel coating provides protection against moisture and oxygen but is prone to corrosion in salt and acidic conditions.
Magnetized through the Thickness
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