Neodymium Block Magnet 5x4x3mm N42SH | Epoxy Coated | High Temperature ≤150ºC
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This rare earth block magnet has a length of 5mm, a width of 4mm and a height of 3mm. It weighs only 3 grams and with a grade of N42SH, its pull force is 630grams. It has a maximum operating temperature of 150 degrees celsius.
Neodymium magnetic blocks come in a variety of sizes and strengths. These rare earth magnets are the strongest magnets. This particular block magnet is epoxy coated which gives a black appearance. The very thin coating provides a strong barrier against salt and water. This makes these permanent magnets ideal for use in marine, industrial and agricultural surroundings. The epoxy coating will also support the magnet when there is friction or knocking.
These magnets are commonly used by skillful people who create things including home improvement solutions.
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.