Neodymium Disc Magnets

Unlike other small Neodymium disc magnets in this category, this round disc magnet is manufactured with a unique combination of rare earth materials that can withstand high operating temperatures that would otherwise cause standard Neodymium magnets to lose magnetic power. In cases where the heat exceeds 80°C, this loss can be permanent. Special Neodymium magnets with the “SH” suffix like this strong N42 Grade disc magnet can remain operational for extended periods at temperatures up to 150°C. These above average temperatures are mostly encountered in industrial processes or around vehicle engines. The compound of materials that enable a high temperature resistant Neodymium magnet to perform in extreme conditions also render it more brittle and therefore more susceptible to damage. Heated environments agitate the magnetic molecules of the Neodymium and interrupt their alignment which in turn reduces their ability to generate magnetic energy. In fact, at cooler or even sub-zero temperatures, the crystalline structure of a magnetic material becomes more densely aligned, and this allows the magnet to generate even stronger magnetic power. If your application requires a Neodymium disc that can tolerate high ambient temperatures you should consider a non-standard grade magnet such as this item.