Your Trusted Source for Neodymium Magnets Manufacturer

Are you looking for a reliable neodymium magnets manufacturer, are you searching for the strongest magnets for your application, or even expecting design for your own specificiation, I am glad you have come to the right place. With over 20 years design and manufacturing experience, AEMagnets is a lead Neodymium magnets supplier, serve to different industies. From grade N30 to the highest grade N52, N54 neodymium magnets, with various sizes and shapes. Applications from underwater to space, from normal temperature to high temperatures as over 200 degree, from louderspeaker to rotor, etc.

Are you eager to explore more about us, are you ready to discuss with us, let's start!

Neodymium Magnets: N45SH with size of 20*88*14.5mm,working temperture up to 150 degree

N45SH with size of 20*88*14.5mm,working temperture up to 150 degree

Neodymium Magnets: N30 with small size of OD 3*ID 1*0.5mm

N30 with small size of OD 3*ID 1*0.5mm

Neodymium Magnets: N50 with size of diameter 10*6mm, chamfer 1X45° on one side

N50 with size of diameter 10*6mm, chamfer 1X45° on one side

Neodymium Magnets: N40 with size of 44*7.97*1mm for scissor appliaction

N40 with size of 44*7.97*1mm for scissor appliaction

Neodymium Magnets: NdFeB plastic boned magnets with black epoxy coating

NdFeB plastic boned magnets with black epoxy coating


Customized Neodymium Magnets for Your Individual Projects!

At AEMagnets, we understand every customer has individual needs and specifictions for the neodymium magnets, that's why we insit on customize for our client, not only for design but also for the manufacruring and service.

Customized Neodymium Magnets for Your Individual Projects

  • Sizes and shapes: Neodymium magnets come in a variety of sizes and shapes to meet the diverse needs of different applications. It's important to note that the size and shape of neodymium magnets are chosen based on the intended application, available space, and required magnetic strength.
  • Grades & magnetic strength: We provide a wide range of grades:N30, N32, N33, N35, N38, N39, N40, N42, N44, N45, N48, N50, N52, N54, which is the highest grade available in current market.
  • Working temperatures: Low-Temperature Grades (N35 to N45): neodymium magnets have a maximum working temperature of around 80 to 120 degrees Celsius. Medium-Temperature Grades (N48 to N50):Medium-temperature neodymium magnets can operate effectively in a temperature range of approximately 120 to 150 degrees Celsius. High-Temperature Grades (N52, N54, and higher):High-temperature neodymium magnets can operate effectively in a temperature range of 150 to 230 degrees Celsius or even higher, depending on the specific grade.
  • Coatings: In addition to standard coatings such as zinc plating and NiCuNi, our offerings extend to a diverse range of specialized coatings tailored to meet varied customer needs. Our repertoire includes epoxy coatings for enhanced durability, gold and silver coatings for specific applications, as well as plastic and rubber coatings for added protection. Furthermore, we provide Teflon coatings, known for their nonstick and heat-resistant properties, as well as Parylene coatings, offering a conformal and insulating layer. This array of coatings ensures that we can cater to a wide spectrum of customer requirements, providing solutions that align precisely with specific application demands.

More Than a Neodymium Magnets Manufacturer

Advanced Material Expertise

Advanced Material Expertise:

Beyond Neodymium, our material expertise spans a diverse range, incorporating cutting-edge alloys and composites. We harness materials with precision to craft solutions that meet the unique demands of modern applications.

Customization Prowess

Customization Prowess:

Recognizing the varied needs of industries, we offer more than off-the-shelf products. Our customization prowess allows us to tailor magnetic solutions, optimizing size, shape, and magnetic strength to align seamlessly with specific project requirements.

Innovative Design Integration

Innovative Design Integration:

We are not merely suppliers but collaborators in innovation. Our team works closely with clients to integrate magnetic solutions seamlessly into their designs. From automotive applications to medical devices, our magnets are seamlessly woven into the fabric of modern technological advancements.

Responsive to Industry Challenges

Responsive to Industry Challenges

Adapting to the ever-evolving landscape of industry challenges, we stay at the forefront of research and development. Our commitment to staying abreast of emerging technologies ensures that our solutions remain not only current but also ahead of the curve.


Why choose AEMagnets

AEMagnets is focus on creating values for our customer with innovative solution, supporting various industries through advanced magnetic technology.

Magnetics Engineering Capabilities

Magnetics Engineering Capabilities

With 20 years of technical magnet expertise, AEMagnets is uniquely qualified in all aspects of magnets engineering and manufacturing. We will work with our customer to achieve an optimized magnetic solution for virtually any need focus on quality, application, cost, lead time. Engineering is core of our business. We've found that concurrent engineering from early start of a project yields the best overall results, which is why we like to work with our customers from the very beginning on major projects by utilizing our highly-skilled technical experts, in our company we call it Early Involvement of Engineering(EIE).

Quality Management

Quality Management

As a licensed and certified magnet manufacturer, we use high level inspection equipment and testing methods to ensure that our supplied products can meet customer requirements. Besides we also conduct quality planning from very beginning as to mitigate risk from virtual to real production. If there is complaint happened we will treat serious and use 8D methodology to make a thoroughly investigation and also set preventive actions, by insist on this our quality keeps on a very high level, which will finally return back to our customer's trust.

Cost Management

Cost Management

Insist to pursue continuous improvement for cost management through lean production & supply chain management, etc., keep price competitive and share interests with customer.


FAQs Neodymium Magnets

  • What is Neodymium Magnets  

    Neodymium magnets, as the 2nd generation of rare earth magnets(the 1 st generation is Samarium Cobalt Magnets) which was discovered independently in 1984 by General Motors and Sumitomo Special Metals. Neodymium magnets well known as NdFeB magnets, made from an alloy of neodymium, iron, and boron. They are the most widely used type of rare-earth magnet and the strongest of permanent magnet available commercially.

    Due to their exceptional magnetic properties Neodymium magnets are a key component in various applications.

  • What is the material for neodymium magnets?  

    Neodymium magnets, also known as NdFeB magnets, are composed of an alloy primarily made of three elements: neodymium (Nd), iron (Fe), and boron (B). The combination of these elements creates a powerful permanent magnet with exceptional magnetic properties. The typical composition of neodymium magnets, is approximately as follows:
    Neodymium (Nd): About 29-32% by atomic percent.
    Iron (Fe): About 63-68% by atomic percent.
    Boron (B): About 1-1.5% by atomic percent

  • How are Neodymium magnets classified?  

    Neodymium magnets are classified into different grades, denoted by the letter 'N' followed by a number. Higher numbers indicate stronger magnets. For example, an N52 magnet is stronger than an N35 magnet. Sometimes after the number there will be a letter, like N38EH, EH stands for extra high, means can work under high temperure as 200 degree.

  • Does neodymium magnets need to be plated?  

    Yes, neodymium magnets typically require plating to protect them from corrosion and improve their overall durability. Neodymium magnets are made of a compound that includes iron, and iron is prone to corrosion when exposed to moisture or harsh environmental conditions. Plating serves several essential purposes for neodymium magnets:

    Corrosion Resistance:
    The most critical reason for plating neodymium magnets is to provide a protective layer that prevents corrosion. Without plating, the iron content in the neodymium magnet is susceptible to rusting, which can degrade the magnet's performance over time.

    Environmental Protection:
    Plating acts as a barrier against environmental elements, including moisture and chemicals. This protection is crucial for applications where magnets are exposed to various conditions, such as in automotive, marine, or outdoor settings.

    The choice of plating material depends on the specific requirements of the application. Nickel-copper-nickel is a commonly used plating for neodymium magnets due to its excellent corrosion resistance. However, other coatings may be chosen based on factors like cost, aesthetics, or unique environmental considerations.

    In summary, while neodymium magnets do not inherently resist corrosion, proper plating is crucial to ensure their long-term performance and functionality in various applications.

  • What's the typical methods to measure the magnetic strength?  

    Two common methods are used to measure the magnetic strength of magnets: Gauss testing and Pull testing.
    Gauss Testing: Gauss measurement gauges a magnet's field strength using a device called a gauss meter.
    Pull Testing: This method measures the force required to detach a known ferrous object from the magnet's surface.
    The choice between these methods depends on the specific requirements of the application and the accuracy needed. Pull testing is often preferred for its practicality and ease of use, especially in scenarios where reliability and repeatability are crucial, such as in quality control programs.

  • Do neodymium magnets lose strength over time?  

    Rarely, Neodymium magnets are the most permanent magnets in the world. As long as you don't overheat them, they lose less than 1% of their strength every 10 years. With daily use, you basically don’t feel any changes

  • Neodymium magnets will be demagnetized?  

    Yes, Neodymium magnets may demagnetize under the following conditions:

    1. Different grades of neodymium magnets have different maximum working temperatures, from 80 to 220°C. If the temperature exceeds, they will demagnetize.
    2. Neodymium is a rare earth permanent magnet, among which the rare earth metal neodymium is relatively active and easily oxidized. Therefore, the surface of neodymium magnets generally needs to be electroplated and anti-corrosion treated. Due to different environments and the passage of time, once the electroplating layer is destroyed, neodymium magnets are easily oxidized and demagnetized.
    3. The magnet may be demagnetized if it is hitted by other hard material.
  • Is neodymium magnets safe to human body?  

    From a medical point of view, neodymium magnets are not harmful to the human body. Moreover, the use of rare earth magnets for magnetic therapy is very common in the medical field. However, if the human body carries medical electronic equipment such as a pacemaker, it is strongly recommended to avoid contact with powerful neodymium magnets, as this may cause serious harm to health. Be aware of potential allergies to the materials used in neodymium magnets, such as nickel. If irritation occurs, discontinue direct skin contact and seek medical advice immediately.


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Your Comprehensive Guide to Purchasing Neodymium Magnets

Chapter 1

What is Neodymium Magnets?

What is Neodymium Magnets?

Neodymium magnets, as the 2nd generation of rare earth magnets(the 1 st generation is Samarium Cobalt Magnets) which was discovered independently in 1984 by General Motors and Sumitomo Special Metals.

Neodymium magnets well known as NdFeB magnets, made from an alloy of neodymium, iron, and boron. They are the most widely used type of rare-earth magnet and the strongest of permanent magnet available commercially.

Due to their exceptional magnetic properties Neodymium magnets are a key component in various applications.

Chapter 2

Application of Neodymium Magnets

Application of Neodymium Magnets

Neodymium magnets find versatile applications across various domains, owing to their exceptional magnetic properties and stability. The key applications include:

Electronics and Communication Equipment
Utilized as heat dissipation materials for CPUs in electronic computers and communication equipment, effectively reducing working temperatures and extending service life.

Manufacturing of Permanent Magnets
Widely employed in manufacturing permanent magnets for applications such as magnetic resonance coils, magnetic tape recorders, circular polaritons for optical fibers, ultra-small speakers, and magnetic drums in recorders.

Electroacoustic Transducers
Used in electroacoustic transducers to replace steel springs in machine receivers, reduce volume and weight; replace paper pots in television mufflers to reduce noise; substitute traditional cylindrical speakers with soft electromagnets in audio equipment to enhance effective volume; employ soft magnetic thin film transistors (TFTs) for large screen color display boards in computer monitors; contribute to reverse radar devices in cars; integrate into gyroscope systems on aircraft; and serve as switches for controlling motor speed in electric shavers.

Connecting Device Between Strong and Weak Electricity
Functions as a connecting device between strong and weak electricity in various electronic applications.

Hall Elements for Sensors and Actuators
Utilized in the manufacture of Hall elements for diverse sensors and actuators, including automotive speedometers, tachometers, and odometers.

Magnetic Recorders
Employed as magnetic recorders in computer disk drives, tape recorders, and automatic players.

Motor Manufacturing
Used in the manufacturing of motor commutators and micro motors, contributing to the efficiency of motor-driven systems.

Coil Winding Materials
Serves as winding materials for speaker coils and headphone coils in audio equipment, as well as packaging materials for TV tube glass shells.

In conclusion, the widespread use of neodymium iron boron magnetic materials spans electronics, communication, manufacturing, sensors, actuators, and motors, showcasing their adaptability and reliability in various technological applications.

Chapter 3

Advantages of Neodymium Magnets

Advantages of Neodymium Magnets

High Magnetic Performance: Neodymium Iron Boron (NdFeB) is currently the second-highest-performing permanent magnet after absolute zero holmium magnets. It possesses a high magnetic energy product and high residual magnetism, capable of generating magnetic fields similar to many other materials.

Small Volume, Light Weight: Due to its high magnetic strength, only a small amount of neodymium magnetic material is needed in the application process to generate a magnetic field similar to that of many other materials. This significantly reduces product volume and weight.

Strong Stability, High Efficiency: neodymium magnetic materials exhibit excellent resistance to magnetic loss and can operate stably in high-temperature environments. The working temperature limit of ordinary magnetic materials is approximately around 80°C, beyond which severe demagnetization occurs, affecting product performance. In contrast, neodymium magnetic materials can have a maximum working temperature of up to 220°C. Although there is still a gap compared to samarium cobalt magnets in terms of high-temperature resistance, considering production capacity and cost, neodymium magnetic materials are a preferable choice.

Cost-Effective: In comparison to samarium cobalt magnets, another rare-earth magnet of similar strength, neodymium iron boron magnets are more cost-effective, providing a significant advantage.

Strong Machinability: neodymium magnets can be shaped for specific purposes through mechanical processing, including the production of small batches for samples. Even in small sizes, they can exhibit high magnetic performance.

Wide Range of Applications: neodymium magnets find application in virtually every industry, making their presence ubiquitous.

In conclusion, as an excellent permanent magnetic material, neodymium iron boron possesses characteristics such as high magnetism, small volume, light weight, strong stability, cost-effectiveness, and excellent machinability. These qualities have led to its widespread application in various fields.

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Chapter 4

What specifications need to be determined when to buy a neodymium magnets

What specifications need to be determined when to buy a neodymium magnets

When considering the purchase of Neodymium magnets, several factors should be taken into account to ensure that the selected magnets meet the specific requirements of your application.

Here are some key factors to consider: Size and Shape, Magnetic Strength (Grade), Operating Temperature, Magnetization direction, Coating.

Chapter 5

What's the difference for gauss testing and pull testing to measure the magnetic strength?

What's the difference for gauss testing and pull testing to measure the magnetic strength?

Gauss Testing
Gauss measurement gauges a magnet's field strength using a device called a gauss meter.
Process: A handheld probe of the gauss meter is moved around the magnet, and the values increase or decrease accordingly.
Limitations: Gauss meters are highly sensitive, making it challenging to obtain reliable, repeatable values. Calibration issues are common, and even slight movements of the probe can yield different results.
Application: Provides insights into a magnet's circuit design and field gradient but may not be the preferred method due to its sensitivity.

Pull Testing
This method measures the force required to detach a known ferrous object from the magnet's surface.
Process: A ferrous object (usually a steel ball) is placed on the magnet's surface, and the force needed for detachment is measured, typically in pounds or ounces.
Application: Effective in determining a magnet's strength, especially for magnets capturing metals from a distance away. It also allows measurement of the magnet's gradient with non-ferrous spacers.
Advantages: Often favored for its reliability and repeatability, particularly in stringent quality programs.


Chapter 6

How neodymium magnets shipped?

How neodymium magnets shipped?

Normally the neodymium magnets can be shipped by air, sea, railway, land, depends on weight and distance, before shipping the magnets need to be packed with magnetic shield to make sure the magnetism can not affect outside of the package. Magnetic inspection is necessary for air shipping which is conducted by 3rd party, meanswhile MSDS report is necessary for sea shipping.

Chapter 7

What should take care when using neodymium magnets?

What should take care when using neodymium magnets?

  1. Neodymium magnets are fragile, so when in use, handle them with care, avoiding rough handling that may result in collisions leading to breakage. When picking up the magnet, push it from the side instead of directly pulling it with your hands.
  2. Keep neodymium magnets away from electronic devices, as their proximity can interfere with electronic equipment and control circuits, impacting their functionality.
  3. Avoid storing neodymium magnets in damp environments to prevent oxidation. Exposure to moisture can cause changes in appearance, physical characteristics, and magnetic properties.
  4. Refrain from placing neodymium magnets near items such as floppy disks, hard disk drives, credit cards, tapes, debit cards, and television cathode-ray tubes. Proximity to magnetic recording devices may impact or damage recorded data.
  5. neodymium magnets should not be exposed to impact or severe vibrations. Horseshoe neodymium magnets should be equipped with a piece of soft iron connecting the two poles and inverting the north and south poles of adjacent neodymium magnets.
  6. Individuals sensitive to metal objects may experience rough or reddened skin when close to neodymium magnets. If such reactions occur, avoid contact with strong neodymium magnets. In severe cases, seek immediate medical attention.
  7. Avoid using neodymium magnets in high-temperature conditions unless there are specific requirements to do so. High temperatures can result in demagnetization and a decrease in magnetic strength.
  8. For safety, place neodymium magnets in locations inaccessible to children to prevent accidental ingestion.
Chapter 8

How to store Neodymium magnets?

How to store Neodymium magnets?

  1. Do not bring neodymium magnets close to electronic equipment, because the magnet itself has positive and negative poles and a circuit loop. If it is close, it will affect the electronic equipment and control loop and affect its use.
  2. Do not store magnets in a humid environment to avoid oxidation, which may cause changes in appearance, physical properties and magnetic properties.
  3. If people who are sensitive to metal objects are close to a magnet, their skin will become rough and red. If the above reaction occurs, please do not touch the magnet.
  4. Do not place magnets close to floppy disks, hard drives, credit cards, tapes, charge cards, TV picture tubes, etc. If a magnet is brought close to a device such as a magnetic recorder, the recorded data will be affected or even destroyed.
  5. Magnets must not be placed near strong current.
  6. Magnets cannot be baked on fire or exposed to high temperatures.
  7. The magnet cannot be subjected to knocking or severe vibration.
  8. Small magnets cannot be placed together with large magnets.
  9. For hoof-shaped magnets, a piece of soft iron should be added to the two poles to connect the two poles, and the north and south poles of adjacent magnets should be inverted.
Chapter 9

In Summary

Navigating the realm of neodymium magnets can be overwhelming, especially for newcomers. Yet, with invaluable insights into neodymium magnets, the complexity of selection transforms into a streamlined process.

Backed by decades of expertise in the neodymium magnets sector, AEMagnets stands as a reliable source for optimal materials grades, size, shapes, and specifications catering to projects of any scale. Our dedicated team is ready to provide insightful guidance, with the added convenience of customizable samples meticulously crafted to suit your distinct requirements. Trust in AEMagnets for a seamless neodymium magnets selection experience.


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