Neodymium Disc Magnet 30mm x 5mm N38
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Neodymium Disc Magnet – 30mm x 5mm | N38
Compact, powerful, and highly versatile, this Neodymium Disc Magnet measures 30mm in diameter x 5mm thick and is manufactured from premium N38-grade NdFeB (Neodymium Iron Boron) rare earth magnetic material. Designed to deliver exceptional magnetic strength in a slim disc profile, this permanent magnet is ideal for engineering, manufacturing, automation, product design, signage, woodworking, and heavy-duty DIY applications.
Neodymium magnets are the strongest commercially available permanent magnets, providing significantly greater holding force than ferrite, Alnico, or samarium cobalt magnets of similar dimensions. The 30mm diameter offers a generous magnetic contact area, while the 5mm thickness provides an excellent balance of holding power and compact installation, making it suitable for applications where space is limited.
This magnet is axially magnetised, meaning the magnetic poles are located on the two flat 30mm diameter faces. This orientation provides maximum face-to-face magnetic performance when used against a ferrous steel surface or paired with another magnet.
Finished with 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 appearance suitable for professional applications.
Features & Benefits
- Premium N38-grade rare earth neodymium disc magnet
- Dimensions: 30mm diameter x 5mm thickness
- Axially magnetised for maximum holding performance
- Strong magnetic force in a slim profile
- 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
- Mechanical engineers
- Manufacturers
- Product designers
- Cabinet makers
- Fabrication workshops
- Industrial maintenance
- Research laboratories
- Makers and hobbyists
Why Choose an N38 Neodymium Disc Magnet?
The 30mm x 5mm N38 Neodymium Disc Magnet offers an excellent combination of compact size, strong holding power, and installation flexibility. Its large diameter provides an extensive contact area, while the slim profile makes it ideal for applications where a lower overall height is required. It is widely used in magnetic fixtures, mounting systems, automation equipment, display solutions, and custom-engineered products.
Please Note
This is a high-strength rare earth magnet and should be handled carefully to avoid 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.
