Neodymium Block Magnet - 20mm x 12.5mm x 3.3mm
Product code: 22022B
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Neodymium Block Magnet - 20mm x 12.5mm x 3.3mm
Magnetic Product Description:
This rare earth block magnet has a length of 20mm, a width of 12.5mm and a thickness of 3.3mm. It has a flux reading of 2302 Gauss and a pull strength of 3.9 kilograms. This product is identified by AMF Magnetics Product Code 22022B.
Uses for our Rare Earth Block Magnets:
This Rare Earth block magnet is a versatile size for a multitude of uses. The flat and compact nature of the magnet’s dimensions makes it ideal for applications where the means of attachment needs to be concealed. It has been found useful on exhibition stands, high-end protective cases and packaging for electronic goods. Handyman and maintenance workers also find these magnets a handy size to keep in the toolbox. Neodymium magnets are the world’s most powerful permanent magnets and they have now replaced alnico and ferrites in many engineering and mechanical industries. They are smaller and lighter than these traditional types of magnets.
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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.
