Shipping neodymium magnets via air requires special considerations due to their strong magnetic fields. As a neodymium magnet manufacturer, we understand that these magnets, being some of the most powerful permanent magnets, are subject to strict regulations to ensure safe and compliant transportation. Here is a comprehensive guide to shipping neodymium magnets by air:

 

Classification of Neodymium Magnets and The Strength

Neodymium magnets are considered hazardous materials by both the International Air Transport Association (IATA) and the Department of Transportation (DOT) if they exceed certain magnetic field thresholds.

Small Magnets: Smaller neodymium magnets, such as those used in consumer products, may not be subject to dangerous goods regulations, but it is crucial to check their field strength.

High strength neodymium magnets: Neodymium magnets with a magnetic field strength that exceeds 0.005 Gauss at a distance of 2.1 meters from the package must be treated as Class 9 (Miscellaneous Dangerous Goods) for air transport under IATA and DOT regulations.

 

Accurately measuring magnetic field strength

Accurately measuring magnetic field strength is crucial to ensure your magnetic products meet air shipment requirements. To ensure compliance, we suggest using a gaussmeter and adhering to the following procedure:

Select a gaussmeter with a resolution of 0.1 mG or higher for accurate readings. Move the probe around the package to identify the point of maximum magnetic field strength. Measurements should be taken at a distance of 7 feet (approximately 2.1 meters) from the container's walls. If the magnetic field strength exceeds the permitted limit, additional shielding or other mitigation methods will be necessary to meet air transport standards.


By following this measurement process, you can verify that the magnetic product's field strength is within the allowed limits, preventing potential shipment issues caused by exceeding the limits.

 

Packaging Requirements

Proper packaging is essential for safely shipping neodymium magnets. Here are the key considerations:

Shielding the Magnetic Field: The package must be designed to shield the magnetic field to prevent interference with aircraft systems and nearby devices. Special magnetic shielding materials may be required, like iron or steel, to create a magnetic shield.

Stabilizing the Magnet: Magnets should be secured inside the packaging to prevent movement, which could cause magnetization or damage to the magnet itself.

Padding and Protection: The packaging should include padding to protect the magnet from physical shock and avoid any movement inside the box.

 

Shipping Restrictions and Airline Requirements

Airline Restrictions: Different airlines may impose varying restrictions for shipping neodymium magnets. It’s important to confirm with the airline or freight forwarder about their specific requirements.

Packaging Compliance: Ensure the packaging complies with the airline’s regulations regarding the maximum permissible magnetic field strength, and that all necessary labels and documentation are in place.

 

Safety Considerations

Electronic Equipment: Ensure that magnets are kept away from sensitive electronics, including devices like mobile phones, laptops, medical equipment, and navigation systems, both during packaging and transport.

Training: Staff handling the magnets must be trained in the proper handling of hazardous materials to ensure compliance with shipping regulations.

 

By following these guidelines and ensuring compliance with the necessary regulations, you can safely and efficiently ship neodymium magnets by air. Shipping magnets by air presents its own set of challenges, Zoyn, with over 25 years of experience in custom neodymium magnets, can assist in selecting the right packaging materials to ensure both safety and compliance during air transport. Our general approach is to transport all magnetized products via ground services. However, when air transport is required, we can prepare the magnets with adequate shielding to ensure safe and compliant shipping.

 

 

Bonded neodymium arc magnets, is one of the main products sold by Zhejiang Zoyn Magnetics Co., Ltd. It has become a popular choice in various design applications due to its unique performance advantages. These magnets, crafted from a combination of neodymium, iron, and boron (NdFeB) powders mixed with a binding agent, offer distinct benefits that enhance the functionality and efficiency of numerous products.

 

Precision in Magnetic Field Distribution

In applications like magnetic sensors used in automotive ABS (Anti - lock Braking Systems), precision in magnetic field distribution is crucial. Bonded neodymium arc magnets can be designed with great accuracy to produce a specific magnetic field pattern. Their arc shape allows for a more targeted and concentrated magnetic field in a particular direction. For example, in a sensor that detects the rotation of a wheel, the arc magnet can be shaped in such a way that it provides a consistent and reliable magnetic signal as the wheel turns. This precision ensures that the sensor can accurately measure the wheel's speed, enabling the ABS system to function effectively and prevent wheel lock - up during braking.

 

Design Flexibility

One of the most significant advantages of arc bonded neodymium magnet is their design flexibility. They can be molded into complex shapes, which is highly beneficial in compact electronic devices. Consider the design of a wireless earbud. The limited space inside the earbud requires magnets that can fit snugly while still providing the necessary magnetic force for functions like speaker operation and charging. Bonded neodymium arc magnets can be customized to fit the unique curved shape of the earbud housing. This not only optimizes the use of space but also ensures that the magnetic components work efficiently within the small form factor. In addition, the bonding process allows for the integration of magnets with other materials, such as plastics or metals, which can further enhance the overall design of the product.

 

Cost - Effectiveness in Mass Production

For industries involved in mass - producing consumer goods, cost - effectiveness is a major consideration. N52 neodymium half round arc magnets are relatively inexpensive to manufacture compared to some other types of magnets. The use of a binding agent in the production process reduces the amount of raw neodymium material required. For instance, in the production of small toys that incorporate magnetic components for interactive play, the cost savings from using bonded neodymium arc magnets can be substantial. Manufacturers can produce large quantities of these toys without incurring high material costs. Moreover, the ease of molding these magnets into the required shapes simplifies the manufacturing process, further reducing production time and costs.

 

Resistance to Demagnetization

In applications where magnets are exposed to varying environmental conditions, resistance to demagnetization is vital. Bonded neodymium arc magnets exhibit good resistance to demagnetization. Take the example of magnetic closures used in outdoor clothing. These closures need to maintain their magnetic strength even when exposed to moisture, temperature changes, and mechanical stress. Bonded neodymium arc magnets can withstand these harsh conditions and continue to function effectively. Their resistance to demagnetization ensures that the clothing closures remain secure, providing a reliable and long - lasting solution for outdoor enthusiasts.

 

Bonded neodymium arc magnets offer a range of key advantages in design, from precision in magnetic field distribution and design flexibility to cost - effectiveness in mass production and resistance to demagnetization. These qualities make them an ideal choice for a wide variety of applications, spanning from automotive and electronics to consumer goods and outdoor gear.

 

If you have more application requirements or questions about magnets products, please contact our professional team.

In the world of magnetism, neodymium magnets have emerged as a game - changing force. Their unique properties have made them a popular choice across a wide range of industries. But what exactly makes neodymium magnets stand out from other magnetic materials?

 

Exceptional Magnetic Strength

Neodymium magnets are renowned for their incredibly high remanence. Remanence refers to the magnetic field remaining in a magnet after the external magnetic field used to magnetize it is removed. N52 grade neodymium magnets, one of the strongest grades available, can have remanence values as high as 1.4 teslas. To put this into perspective, ferrite magnets, a common alternative, typically have remanence in the range of 0.2 - 0.4 teslas. This high remanence allows neodymium magnets to generate a much stronger magnetic pull, making them ideal for applications where a powerful magnetic force is required, such as in electric motors used in hybrid cars or in high - performance speakers.

 

Another aspect of their strength is high coercivity. Coercivity is the measure of a magnet's ability to resist demagnetization. Neodymium magnets have a very high coercivity, which means they can maintain their magnetic properties even when exposed to strong external magnetic fields or high temperatures (to a certain extent). In comparison, alnico magnets, which are known for their good temperature stability, have lower coercivity values in some cases. This makes neodymium magnets more reliable in applications where there may be a risk of accidental demagnetization.

 

Power - to - Size Ratio

One of the most significant advantages of neodymium magnets is their remarkable power - to - size ratio. Due to their high magnetic strength, small neodymium magnets can deliver a substantial magnetic force while being relatively small in size. This is a huge benefit in applications where space is at a premium, such as in portable electronics like smartphones, tablets, and wireless earbuds. In these devices, small neodymium magnets are used in components like vibration motors and speakers, providing the necessary magnetic functionality without taking up too much space.

 

Ease of Integration

Their lightweight nature also makes them easier to integrate into various products. When compared to larger and heavier magnetic materials, neodymium magnets allow for more flexible design options. For example, in the aerospace industry, where weight reduction is crucial for fuel efficiency, neodymium magnets can be used in actuators and sensors without adding excessive weight to the aircraft.

 

Diverse Industrial Uses

Neodymium magnets find applications in a vast array of industries. In the medical field, they are used in MRI machines to generate the strong magnetic fields required for imaging. Their precision and strength enable detailed and accurate scans. In the manufacturing industry, circular strong neodymium magnets are used in magnetic separators to remove metal contaminants from materials. In the renewable energy sector, neodymium magnets are a key component in wind turbine generators, helping to convert wind energy into electricity efficiently.

 

Consumer Product Applications

In consumer products, neodymium magnets are everywhere. They are used in magnetic closures for bags and wallets, providing a convenient and secure way to fasten. In toys, they can create interactive and engaging play experiences. Their versatility stems from their ability to be shaped, sized, and magnetized in different ways to suit specific application requirements.

 

Neodymium magnets' exceptional magnetic strength, compact size, and versatility set them apart from other magnetic materials, making them an invaluable resource in modern technology and industry.

On March 6, 2025, Zoyn Magnetics and Hangzhou Dianzi University (HDU) held a prestigious signing and inauguration ceremony for their newly established Joint Research Center at Zoyn Magnetics' headquarters. This landmark event was graced by prominent leaders, including Shen Li, Party Secretary of the School of Materials and Environmental Engineering at HDU; Dean Zhang Xuefeng; Vice Dean Zhao Lizhong; Deputy Director of the Municipal Bureau of Economy and Information Technology, Chen Wenyao; Secretary-General of the Provincial Magnetic Industry Association, Tan Huming; along with Zoyn Magnetics’ key executives, Chairman Ren Yuanyue, Zhao Ye and others.

 

In today’s rapidly evolving global technology landscape, innovation is the driving force behind industrial and economic growth. Strengthening industry-academia collaboration and accelerating the commercialization of scientific advancements have become crucial in shaping a competitive and forward-thinking business environment. As a national-level "Little Giant" enterprise specializing in high-performance NdFeB permanent magnets—Zoyn has always regarded technological innovation as its cornerstone. With annual R&D investment exceeding 5% of revenue and ownership of 87 core patents, the company’s products are widely applied in strategic fields such as new energy vehicles, smart equipment, etc. The collaboration with HDU targets cutting-edge advancements like "ultra-high-temperature-stable permanent magnets" and "nano-scale grain boundary diffusion technology." Over the next three years, the partnership aims to commercialize five core patented technologies, accelerating product iteration by 30%.

 

A New Paradigm for Industry-Education Integration: Building an Innovation Ecosystem

The Joint R&D Center pioneers a “dual-engine” collaboration model, driving both technological breakthroughs and talent cultivation:

Demand-Driven R&D: A “Technical Challenges Pool” consolidates critical production pain points identified by the enterprise. HDU research teams will employ a mission-oriented approach to systematically tackle these challenges, accelerating innovation.

Tailored Talent Development: The “Distinguished Engineers Program”, jointly designed by both parties, will integrate Zoyn’s technical experts as mentors, fostering a new generation of interdisciplinary talent equipped with real-world problem-solving skills.

End-to-End Innovation Incubation: Supported by dedicated transformation fund, the center implements a three-stage validation system—lab prototype, pilot testing, and mass production—ensuring a smooth and efficient transition from research to commercialization.

 

This synergy of "academic brilliance and industrial pragmatism" not only propels Zoyn’s high-quality growth but also shaping the future of technological innovation. We remain steadfast in its mission to push the boundaries of magnetic materials technology, ensuring that it remains at the vanguard of global industrial progress.

 

CACE2025 is set to grandly open from March 17th to 19th, 2025, at Hall 8.2 of the National Exhibition and Convention Center (Shanghai). This exhibition boasts a grand scale, covering an exhibition area of 23,000 square meters, and will gather over 300 leading enterprises in the industry.

The exhibition focuses on the global forefront of the agricultural chemical industry, presenting advanced technological concepts, production equipment, comprehensive solutions, and highly efficient application devices for agricultural chemicals. Its aim is to facilitate international trade exchanges and capacity cooperation, and promote the global agricultural chemical industry towards green, intelligent, and high-quality development.

Anhui Shengshi Datang, which specializes in the research and development and production of chemical equipment, has made meticulous preparations for this exhibition. With its professional strength and innovative products, it has attracted numerous customers to come for inquiries and understanding.

In the agricultural chemical industry, magnetic pumps and centrifugal pumps are widely used. The leak-free characteristic of magnetic pumps makes them an ideal choice for transporting highly corrosive and high-purity pesticide raw materials and formulations, effectively ensuring production safety and product quality. Centrifugal pumps, with their high-flow transportation capacity and good adaptability to different viscosity liquids, perform excellently in large-scale pesticide solution transportation. At the same time, they can promote uniform reactions and control temperatures in circulation systems, thereby enhancing production efficiency and product quality.

 

At CAC2025, Anhui Shengshi Datang Chemical Equipment Group Co,Ltd. presented many innovative technologies and agrochemical products. With advanced chemical process pump solutions and intelligent agrochemical services, it expanded markets at home and abroad, got more orders, and had strategic cooperations with top agrochemical firms. It consolidated its leading position in the industry with achievements in relevant fields. The exhibition promoted the industry chain upgrade. It will keep innovating to drive the industry's green transformation.