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Neodymium Block - 20mm x 12mm x 5mm | Epoxy Coating
Product code: 22021E
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Magnetic Product Description:
This magnet has a length of 20mm, a width of 12mm and a height of 5mm. It uses AMF Magnet part number 22021E.
Uses for our Rare Earth block magnets:
Rare Earth Block magnets are the strongest permanent magnets in production due to their superior holding power and compact size. Their only shortcoming compared to other permanent magnets is their lack of resistance to corrosion that occurs from exposure to weather. Epoxy coatings overcome this weakness by encapsulating the nickel-coated magnet and providing long-term protection from moisture damage and the detrimental effects of oxidisation and corrosion which weaken the mechanical strength of the magnet and may cause it to crack or chip. Although the Epoxy coating has a positive effect on the overall longevity of the magnet, the air gap created between metal and magnetic surfaces will reduce the holding strength and should be taken into consideration in applications where strength is important.
No FAQ available
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.
Magnetic Product Description:
This magnet has a length of 20mm, a width of 12mm and a height of 5mm. It uses AMF Magnet part number 22021E.
Uses for our Rare Earth block magnets:
Rare Earth Block magnets are the strongest permanent magnets in production due to their superior holding power and compact size. Their only shortcoming compared to other permanent magnets is their lack of resistance to corrosion that occurs from exposure to weather. Epoxy coatings overcome this weakness by encapsulating the nickel-coated magnet and providing long-term protection from moisture damage and the detrimental effects of oxidisation and corrosion which weaken the mechanical strength of the magnet and may cause it to crack or chip. Although the Epoxy coating has a positive effect on the overall longevity of the magnet, the air gap created between metal and magnetic surfaces will reduce the holding strength and should be taken into consideration in applications where strength is important.
No FAQ available
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.
