Product code: D-D22H1-N42au-SA
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This Rare Earth Disc Magnet has a diameter of 22mm, and a height (or thickness) of 1mm. This magnet has a magnetic flux reading of 598 Gauss, and a pull force of 1.32 kilograms. This product is identified by the AMF Magnetics part number D-D22H1-N42au-SA.
Permanent magnets come in a variety of forms and this term applies to many different types of hard form magnetic materials such as Neodymium, Ferrite and Samarium Cobalt. Neodymium is the most popular magnetic material in this day and age as it provides a superior super strong magnetic hold in comparison to traditional magnetic materials that pre-date it. Rare Earth disc magnets are certainly one of the most widely used products we sell as they are well suited to a huge array of applications. The low profile and wide surface area make them ideal for any job requiring an extremely strong hold that is resistant to shearing forces and sideways pressure.
Gold coated magnets are still susceptible to rust when exposed to the elements or damage from their environment. If you need to ensure that your gold magnet does not rust, you may want to consider applying a sealant which will extend the lifespan of the coating, but may reduce the pull force.
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NB: Ranges are indicative for product category, please check individual products for specic values within that range.
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.
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.
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.
The Pull Force listed for each magnet is based on lifting 10mm thick steel from a horizontal surface. Magnets on a vertical surface (of 10mm thick steel) are generally able to hold around only 30% of the pull force listed in the product description. This is due to the effects of gravity and the lack of friction between the surface and the shiny magnet. Read More
