Neodymium Block Magnet - 20mm x 20mm x 3mm | N45
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This Neodymium block magnet weighs 0.02kg, has a pull force of 5.14kg, Gauss 1784, Grade N45. Product has dimensions of 20.00mm in width, 20.00mm in length and 3.00mm in height. Its direction of magnetisation is through the height.
This Neodymium Block Magnet has a low profile and two square flat surfaces that project the North and South magnetic poles. The low height profile makes this magnet particularly resistant to sheer forces and sideways pressure and perfect for jobs where this Neodymium magnet is providing hold and positioning. The specific dimensions of this Rare Earth block magnet give it a unique role in the stable of Neodymium magnets. It's low height dimension means this magnet has less overall strength than magnets with a thicker profile, but that is a big advantage for applications that require a larger surface so it can be glued to the base of a non-magnetic object.
This magnet is used in a diverse group of consumers, including roman blind and curtain manufacturers, training simulator suppliers to the mining and earthmoving industries, pharmaceutical companies and for general purpose use. Neodymium block magnets can also be used for securing solar panels to household roofs and other surfaces, again proving the important role Neodymium magnets play in renewable and alternative energy innovation.
Typical Physical Properties
NB: Ranges are indicative for product category, please check individual products for specic values within that range.
Production Flow Diagram
Demagnetization Curves
Surface Treatment
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.
Range and Tolerance
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.
Magnetic Properties
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.
Returns Policy
If you are not entirely satisfied with your purchase, we're here to help.
We have a 30 Day Returns policy at Frenergy Magnets. You may return your item within 30 days of receiving it to receive a refund.
The product/s must be unused and in the same condition you received them in. Please contact us at info@frenergy.com.au to initiate the returns process.
The buyer is responsible for the cost of returning the order.
