Neodymium Disc Magnet 9.5mm x 3.2mm N48SH | High Temperature ≤150ºC
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Neodymium Disc Magnet – 9.5mm x 3.2mm | N48SH | High Temperature
The Neodymium Disc Magnet 9.5mm x 3.2mm | N48SH | High Temperature is a premium rare earth permanent magnet that combines exceptional magnetic strength with outstanding resistance to elevated operating temperatures. Manufactured from N48SH-grade Neodymium Iron Boron (NdFeB), this high-performance disc magnet measures 9.5mm in diameter and 3.2mm thick, making it ideal for demanding industrial, automotive, electronic, and engineering applications where both powerful magnetic performance and thermal stability are essential.
With its N48SH magnetic grade, this disc magnet offers greater magnetic energy than lower-grade alternatives while maintaining reliable performance at operating temperatures of up to 150°C. This makes it an excellent choice for applications near motors, generators, heating systems, industrial machinery, and electronic equipment where conventional neodymium magnets may lose strength due to heat exposure.
The magnet is axially magnetised, meaning the north and south poles are located on the two flat circular faces, providing maximum holding force when mounted flat against a ferrous steel surface or stacked with other magnets.
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 both industrial and commercial environments.
Key Features
- Premium N48SH-grade neodymium rare earth magnet
- High magnetic strength with excellent thermal stability
- Dimensions: 9.5mm diameter x 3.2mm thick
- Designed for continuous operation at temperatures up to 150°C
- Axially magnetised for maximum face-to-face holding strength
- Durable nickel-copper-nickel (Ni-Cu-Ni) protective coating
- Excellent corrosion and oxidation resistance
- Precision manufactured for consistent magnetic performance
- Long-lasting permanent magnet
Common Applications
- Electric motors and generators
- Industrial automation systems
- High-temperature sensors
- Robotics and motion control equipment
- Electronics manufacturing
- Scientific and laboratory equipment
- Magnetic fixtures and tooling
- Precision engineering
- Automotive components
- OEM manufacturing and custom machinery
Ideal For
- Mechanical engineers
- Electrical engineers
- Automation specialists
- Product designers
- OEM manufacturers
- Maintenance technicians
- Research and development teams
- Industrial equipment manufacturers
Why Choose an N48SH High Temperature Neodymium Disc Magnet?
The 9.5mm x 3.2mm N48SH High Temperature Neodymium Disc Magnet is designed for applications where both maximum magnetic strength and heat resistance are critical. Compared to lower magnetic grades, N48SH provides increased magnetic performance while retaining excellent stability at temperatures of up to 150°C, making it suitable for demanding industrial environments where standard neodymium magnets may experience permanent demagnetisation.
Its compact disc shape offers a generous magnetic contact area relative to its size, making it ideal for magnetic mounting, positioning, holding, sensing, and alignment systems where reliability and precision are essential.
Technical Specifications
- Material: Neodymium Iron Boron (NdFeB)
- Magnet Grade: N48SH
- Shape: Disc
- Diameter: 9.5mm
- Thickness: 3.2mm
- Magnetisation: Axial (through the thickness)
- Maximum Recommended Operating Temperature: 150°C
- Coating: Nickel-Copper-Nickel (Ni-Cu-Ni)
- Magnet Type: Permanent Rare Earth Magnet
Please Note
This is a high-strength rare earth magnet and should be handled with care. Strong neodymium magnets can attract steel objects or other magnets unexpectedly, creating pinch hazards or causing the magnet to chip or fracture if allowed to collide.
Maximum holding force is achieved under ideal conditions using a clean, flat, thick mild steel surface with full face-to-face contact. Actual magnetic performance will vary depending on the steel thickness, air gap, surface finish, mounting arrangement, and operating environment.
Although this N48SH magnet is engineered for continuous operation at temperatures of up to 150°C, exceeding this limit may result in permanent loss of magnetic strength. Keep away from children, pacemakers, implanted medical devices, sensitive electronic equipment, and magnetic storage media. Do not drill, machine, or strike the magnet, as neodymium is hard but brittle and may crack or shatter under excessive mechanical stress.
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.
