Neodymium Disc Magnet 25mm x 5mm N38
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Neodymium Disc Magnet – 25mm x 5mm | N38
Powerful, compact, and highly versatile, this Neodymium Disc Magnet measures 25mm in diameter x 5mm thick and is manufactured from premium N38-grade NdFeB (Neodymium Iron Boron) rare earth magnetic material. Designed for applications requiring strong magnetic performance in a slim profile, this permanent magnet is ideal for engineering, manufacturing, automation, product assembly, signage, woodworking, and heavy-duty DIY projects.
Neodymium magnets are the strongest commercially available permanent magnets, delivering significantly greater holding power than ferrite, Alnico, or samarium cobalt magnets of comparable size. The 25mm diameter provides a generous magnetic contact area, while the 5mm thickness offers an excellent balance between holding strength and a low-profile design, making it suitable for installations where space is limited.
This magnet is axially magnetised, meaning the magnetic poles are located on the two flat 25mm diameter faces. This configuration delivers maximum face-to-face holding force when used against a ferrous steel surface or paired with another magnet in a magnetic assembly.
Protected by a durable nickel-copper-nickel (Ni-Cu-Ni) coating, this magnet offers excellent resistance to corrosion, oxidation, and everyday wear while maintaining a smooth, polished finish.
Features & Benefits
- Premium N38-grade rare earth neodymium disc magnet
- Dimensions: 25mm diameter x 5mm thickness
- Axially magnetised for maximum holding performance
- Strong magnetic force in a compact, low-profile design
- Large magnetic contact surface
- Durable nickel-copper-nickel (Ni-Cu-Ni) coating
- Precision-manufactured for consistent quality
- Long-lasting permanent magnet
- Suitable for industrial, commercial, and DIY applications
Common Applications
- Magnetic mounting systems
- Engineering and manufacturing
- Product assembly
- Workshop jigs and fixtures
- Magnetic closures and catches
- Retail displays and signage
- Scientific research
- DIY fabrication and prototyping
Ideal For
- Engineers
- Manufacturers
- Product designers
- Cabinet makers
- Fabrication workshops
- Industrial maintenance
- Research laboratories
- Hobbyists and makers
Why Choose an N38 Neodymium Disc Magnet?
The 25mm x 5mm N38 Neodymium Disc Magnet provides an excellent combination of magnetic strength, compact size, and installation flexibility. Its large diameter maximises the magnetic contact area, while the slim 5mm profile allows it to be incorporated into applications where space is at a premium. It is widely used in magnetic fixtures, mounting systems, automation equipment, display solutions, and custom-engineered products requiring reliable long-term performance.
Please Note
This is a high-strength rare earth magnet and should be handled carefully to prevent pinch injuries or damage caused by magnets snapping together. Holding performance is achieved under ideal conditions using a clean, flat, thick ferrous steel surface with full face-to-face contact. Actual magnetic strength will vary depending on the steel thickness, surface finish, air gap, and application.
Keep away from children, pacemakers, implanted medical devices, sensitive electronic equipment, magnetic storage media, and precision instruments. Avoid drilling, machining, excessive heat exposure, or heavy impacts, as these may permanently damage the magnet or reduce its magnetic performance.
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. We 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.
