Strong
Strong magnets, however our wood was warped, so we couldn't use them for this job - maybe another in the future.
Product code: 22008
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This Neodymium Rare Earth Block Magnet has a length of 40mm, a width of 10mm and a thickness of 4mm. It has the AMF magnet part number 22008. It has a centred 4mm countersunk hole with an 8mm head width. Neodymium magnetic material is super strong, providing for a powerful magnetic strength. This strong Neodymium Magnetic block has a pull force of 3.5KG, which is impressive considering its weight of 10gm.
Rare Earth Magnetic Block is popular as an industrial magnet due to its strength and the versatility that the convenient countersunk hole provides. This countersunk block magnet is ideal for fastening and securing where maximum strength from a magnet of minimum size is required. This Bar Magnet is popular with carpenters, sheet metal fabricators, aluminium and glazing suppliers and fixture supply outlets. It is also a great general purpose magnet.
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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