Neodymium Disc Magnet 30mm x 10mm N45H | High Temperature ≤120ºC
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Neodymium Disc Magnet 30mm x 10mm | N45H | High Temperature 120°C
The Neodymium Disc Magnet 30mm x 10mm | N45H is a premium rare earth permanent magnet designed for applications that require exceptional magnetic strength while operating in elevated temperatures. Measuring 30mm in diameter and 10mm thick, this magnet is manufactured from N45H-grade NdFeB (Neodymium Iron Boron), offering a higher magnetic energy product than standard N35 or N38 grades while maintaining reliable performance at temperatures of up to 120°C.
Unlike standard neodymium magnets, which can begin to lose magnetic strength when exposed to higher temperatures, N45H high-temperature magnets are specifically engineered for demanding environments where heat resistance is critical. This makes them ideal for industrial machinery, electric motors, automation equipment, sensors, fixtures, magnetic couplings, manufacturing, and engineering applications.
This disc magnet is axially magnetised, meaning the magnetic poles are located on the two flat 30mm diameter faces, providing maximum holding force when used against a ferrous steel surface or paired with another magnet.
The magnet is protected by a durable nickel-copper-nickel (Ni-Cu-Ni) coating, which provides excellent resistance to corrosion, oxidation, and everyday wear while maintaining a smooth, polished finish suitable for professional industrial use.
Key Features
- Premium N45H-grade rare earth neodymium magnet
- Dimensions: 30mm diameter x 10mm thickness
- Maximum recommended operating temperature: 120°C
- Axially magnetised for maximum face-to-face holding strength
- High magnetic energy for demanding applications
- Durable nickel-copper-nickel (Ni-Cu-Ni) protective coating
- Precision manufactured for consistent performance
- Long-lasting permanent magnet
- Suitable for industrial, commercial, research, and engineering applications
Common Applications
- Electric motors and generators
- High-temperature industrial equipment
- Manufacturing automation
- Magnetic fixtures and jigs
- Product assembly
- Robotics and automation systems
- Scientific and laboratory equipment
- OEM machinery and custom engineering projects
Industries
- Manufacturing
- Automotive
- Mining
- Food processing equipment
- Industrial automation
- Aerospace
- Research and development
- Mechanical engineering
Why Choose an N45H High Temperature Neodymium Magnet?
The N45H grade combines higher magnetic strength with excellent thermal stability, making it an ideal solution where conventional neodymium magnets may lose performance due to heat. The 30mm x 10mm dimensions provide an excellent balance of holding force, magnetic field depth, and installation flexibility, making this magnet suitable for heavy-duty industrial applications, magnetic clamping systems, positioning fixtures, and precision equipment.
Compared to standard neodymium magnets, the N45H grade offers improved reliability in elevated temperature environments while still delivering the exceptional holding power that rare earth magnets are known for.
Technical Specifications
- Material: Neodymium Iron Boron (NdFeB)
- Magnet Grade: N45H
- Shape: Disc
- Diameter: 30mm
- Thickness: 10mm
- Magnetisation: Axial (through the thickness)
- Coating: Nickel-Copper-Nickel (Ni-Cu-Ni)
- Maximum Operating Temperature: 120°C
Please Note
This is a high-strength rare earth magnet and should be handled with care. The powerful magnetic force can cause serious pinch injuries or damage if magnets snap together unexpectedly.
Holding force is measured under ideal conditions using a clean, flat, thick mild steel surface with full face-to-face contact. Actual holding performance will vary depending on the steel thickness, air gap, mounting arrangement, and operating environment.
Although this magnet is rated for continuous operation at temperatures up to 120°C, exceeding this temperature may result in permanent loss of magnetic strength. Keep away from children, pacemakers, implanted medical devices, sensitive electronic equipment, and magnetic storage media. Avoid drilling, machining, welding near, or subjecting the magnet to heavy impacts, as the neodymium material is hard but brittle and may chip or crack if mishandled.
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.
