20x30x10mm block magnets
China Manufacturer rectangle/bar magnet Large Super High Grade Rare Earth Permanent Ndfeb Magnet.
|Place of origin||China|
|Tolerance||±0.03mm for diamater /thickness, ±0.1mm for width/ length|
|Direction of magnetisation||axial (parallel to height)|
|Coating||Nickel-plated (Ni-Cu-Ni),can be Customised Gold, Silver, Copper, Epoxy, Chrome, etc)|
|Grade||Customized N35 N38 N40 N42 N45 N48 N50 N52 ……|
|Max. Working Temperature||Grade||Max. Operating Temperatures|
|33M- 48M||100°C (212°F)|
Coating for your convenience:
Neodymium magnet are composed mainly of neodymium, iron and boron.if that are not plated, the iron in the material will oxidize very easily, particularly is exposed to moisture. Even normal humidity will rust any iron anywhere over time.
Nickel is the most common choice, as it is durable and cost-effective. Our magnets are costed with a triple plating of nickle-copper-nickle.This created a shiny siliver finish and provides dependable resistance to corrosion in most applications. It is important to remember that no neodymium magnet,even with a plastic or gold coating, is completely waterproof.
More method of coating as below: