Reviewed by Ingrid P.
Verified Buyer
I recommend this product
Small but strong!
Great strong little magnets.
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Neodymium Disc Magnet - 20mm x 3mm
Product code: 20018
$5.35buy 10 to 99 itemsand
save 17%
$4.00buy 100+ itemsand
save 38%
Total
$6.50
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Neodymium Disc Magnet - 20mm x 3mm
Rated 5.0 out of 5
Product Code
20018
Pull Force*
4.3 kg
Weight
7 gm
Style
Rare Earth Disc magnet
Coating
Nickel (NiCuNi)
Direction of Magnetisation
Axially magnetised
Dimensions
Height:3mm, Diameter:20mm
*Measured against up to 10mm mild steel.
Magnetic Product Description:
This rare earth disc has a diameter of 20mm and a height of 3mm. It has a magnetic flux reading of 1810 Gauss and a pull force of 4.3kg. It is identified by the AMF magnet part number 20018.
Uses for our rare earth disc magnets:
Companies designing and fabricating components for the aviation industry mean it when they offer to help get your project off the ground and safely back down again. While many of these companies operate with modern materials and advanced technologies they never stray too far from reality.
They know the simpler the design, using well-established manufacturing techniques and testing principles, the better the build cost and product predictability. For these reasons, neodymium disc magnets are found throughout the design and build areas of the aviation industry. They provide permanent and constant power which are appealing properties to anyone averse to risk.
Magnetism is a well-known technology, yet is finding new applications that use its power to help designers solve difficulties with modern or advanced technology. Magnets conform to the preferred and established testing principles and a magnets characteristics like pull force and weight are predictable and easy to confirm. Magnets have achieved a trusted and established reputation in traditional manufacturing techniques and in complex aviation systems, where getting off the ground and back down again safely is everything, engineers are more than sure magnets will do their job. In fact, they're positive, and in Aviation that’s a very important difference.
These N42 Grade Discs give out increased Magnetic Energy from the same dimensioned magnet.This means more holding strength from the same weight item which is very important in terms of Aviation principles.
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.
