Neodymium Disc Magnet 6mm x 2mm N42SH | High Temperature ≤150ºC
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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.
Typical Physical Properties
NB: Ranges are indicative for product category, please check individual products for specic values within that range.
Production Flow Diagram
Demagnetization Curves
Surface Treatment
The most common coating for Neodymium magnets is Nickel + Copper + Nickel (Ni + Cu + Ni). This coating offers the magnet relatively good protection from corrosion and passive applications. If the magnet will be exposed to moisture or liquid then consider the use of an organic coating such as Epoxy. A hard wearing coating, Epoxy is suited to applications where the magnet will come under some friction or knocking.
Range and Tolerance
Magnets are readily available in Blocks, Discs, Cylinders & Rings. AMF Magnetics specializes in the supply of short-run prototype magnets including Arc Segments, various magnetic orientations etc. If you need a magnet size that we don't carry in stock, submit a Design-a-Magnet enquiry for a quote on your custom magnet design.
Magnetic Properties
Neodymium magnets are offered in several different grades. The first section N30-54 has an operating temperature of up to 80 degrees. Most of our stock only goes up to N38. The second section, denoted with the "M" prefix after the grade has an operating temperature 100 degrees. After this the grades are "H", "SH", "UH" & "EH". In order for the magnet to withstand a higher operating temperature, during production more of the raw material PrNd is incorporated as these elements have a naturally occurring resistance to high temperatures.
Returns Policy
If you are not entirely satisfied with your purchase, we're here to help.
We have a 30 Day Returns policy at Frenergy Magnets. You may return your item within 30 days of receiving it to receive a refund.
The product/s must be unused and in the same condition you received them in. Please contact us at info@frenergy.com.au to initiate the returns process.
The buyer is responsible for the cost of returning the order.
