NEODYMIUM MAGNETS

Supplier of high coercivity permanent magnets

Neodymium (NdFeB) magnets are the most powerful permanent magnets in the world, known for their exceptional magnetic energy product, high coercivity, and excellent performance-to-cost ratio. At TOPMAG, we master the entire production chain—from advanced powder metallurgy and precise sintering to sophisticated machining—enabling us to offer grades from N35 to N55+ and specialized high-temperature series (M, H, SH, UH, EH) for demanding environments up to 220°C.

As a professional NdFeB magnet supplier, TOPMAG provides fully customized solutions—including complex shapes, multi-pole magnetization, and robust coatings (Ni, Zn, Epoxy)—for automotive, industrial automation, energy systems, and consumer electronics. Every magnet is produced under strict ISO-controlled processes and complies with RoHS and REACH standards, ensuring consistent performance, full traceability, and reliable integration for global B2B partners.

Product Categories

We provide standard and custom shapes of neodymium magnets to meet diverse application requirements. Common standard shapes include:

Grades & Specifications

Our neodymium magnets cover standard grades and high-temperature grades, with clear parameter matching for different working environments. Common grades include:

Grades & Specifications of Neodymium (NdFeB) Magnets

Grade	Max Energy Product (BH)max	Remanence (Br) Min	Coercivity (HcJ) Min	Max Operating Temp	Detailed Applications
N35 - N52	330 - 510 kJ/m³ (41 - 64 MGOe)	11,700 - 14,800 Gauss	876 - 955 kA/m	80°C (176°F)	Consumer electronics (smartphone speakers, vibration motors, camera autofocus modules), small industrial motors, light-duty magnetic separators, toys and promotional items
N35M - N52M	330 - 510 kJ/m³ (41 - 64 MGOe)	11,700 - 14,800 Gauss	1,353 - 1,432 kA/m	100°C (212°F)	Automotive sensors (ABS, EPS), household appliances (small fans, electric toothbrushes), medium-power industrial pumps, office equipment (printer rollers, scanner motors)
N35H - N52H	330 - 510 kJ/m³ (41 - 64 MGOe)	11,700 - 14,800 Gauss	1,590 - 1,669 kA/m	120°C (248°F)	Industrial servo motors, heavy-duty blowers, welding equipment, automotive air conditioning compressors, solar tracker drive systems
N35SH - N52SH	330 - 510 kJ/m³ (41 - 64 MGOe)	11,700 - 14,800 Gauss	1,988 - 2,067 kA/m	150°C (302°F)	EV drive motors, wind turbine generators, high-temperature industrial furnaces, marine equipment, heavy-duty electric vehicle components
N35UH - N48UH	330 - 470 kJ/m³ (41 - 59 MGOe)	11,700 - 14,200 Gauss	2,385 - 2,464 kA/m	180°C (356°F)	Aerospace equipment (satellite attitude control systems), high-temperature industrial motors, downhole oil drilling sensors, advanced military electronics
N30EH - N45EH	298 - 443 kJ/m³ (37 - 56 MGOe)	11,200 - 13,800 Gauss	2,783 - 2,862 kA/m	200°C (392°F)	Extreme high-temperature industrial processes, jet engine components, high-power radar systems, thermal management equipment in harsh environments
N28AH - N40AH	277 - 398 kJ/m³ (35 - 50 MGOe)	10,800 - 13,000 Gauss	3,180 - 3,259 kA/m	220°C (428°F)	Ultra-high temperature aerospace applications, nuclear industry sensors, high-temperature industrial heating systems, advanced material processing equipment

Key Performance Advantages

Neodymium (NdFeB) magnets have outstanding magnetic performance, which is the core reason for their wide application in various high-end fields. Key performance indicators include:

High Magnetic Energy Product

Up to 52 MGOe, which is 10 times that of ferrite magnets, enabling miniaturization and lightweight of equipment

Strong Coercivity

Up to 2800 kA/m, excellent anti-demagnetization ability, stable performance in complex magnetic fields

Stable Remanence

High residual magnetic flux density, ensuring strong and continuous magnetic force output

Wide Temperature Adaptability

High-temperature grades can withstand up to 180°C, suitable for high-temperature working environments such as automotive engines and industrial furnaces

Excellent Mechanical Processability

Can be precision cut, ground and drilled to meet strict dimensional tolerance requirements

High Cost-Effectiveness

Superior performance compared with other permanent magnets, and the production cost is continuously optimized, suitable for large-scale industrial applications

Widely Applications

Due to their excellent performance, neodymium magnets are widely used in global high-growth industries. Typical application fields include:

• Automotive & EV——EV drive motors, EPS systems, ABS sensors, electric air conditioner compressors, regenerative braking systems

• Energy Systems——Wind turbine generators, solar tracker drive motors, energy storage system inverters, smart grid sensors

• Industrial Automation——Servo motors, stepper motors, industrial robot end effectors, magnetic encoders, automated material handling systems

• Consumer Electronics——Smartphone speakers & vibration motors, TWS earbuds, camera autofocus systems, wireless charging pads, smart watch motors

• Medical Devices——MRI machines, cochlear implants, surgical navigation systems, IVD magnetic separation devices, ventilator motors

• Aerospace & UAV——UAV propulsion motors, precision navigation sensors, satellite attitude control systems, drone gimbal stabilization

• Home Appliances——Washing machine motors, air conditioner compressors, vacuum cleaner motors, blender motors, electric toothbrush motors

Surface Treatment Options

Neodymium magnets are prone to corrosion, so professional surface treatment is essential to extend their service life. We provide multiple surface treatment methods to adapt to different working environments:

Nickel-Copper-Nickel Coating (Ni-Cu-Ni)

Most common treatment, excellent corrosion resistance and wear resistance; Suitable for most industrial and electronic applications

Zinc Coating (Zn)

Cost-effective, good corrosion resistance; Suitable for indoor industrial equipment and household appliances

Epoxy Coating

Excellent acid and alkali resistance, suitable for harsh environments such as humidity and corrosion; Common in automotive and marine applications

Gold/Tin Coating

High conductivity and corrosion resistance; Used in high-end electronic components and aerospace equipment

Passivation

Simple and economical, suitable for short-term storage or internal non-corrosive environments

Sample Center

We provide free neodymium magnet samples (only freight is charged) to help you verify product performance before mass purchase. Sample application process:

Process Step	Detailed Description
1. Submit Sample Request	Fill in the sample application form on the website, indicating the required shape, grade, size and surface treatment
2. Sample Confirmation	Our technical team will confirm the sample details with you within 24 hours and issue a sample quotation (freight only)
3. Sample Delivery	After payment of freight, we will ship the sample within 3-5 working days; Provide tracking number for inquiry
4. Test & Feedback	You can conduct performance tests on the sample; Our team provides technical support for test results
5. Mass Order	After sample confirmation, we will arrange mass production according to the sample standards, ensuring consistent quality

Looking for a reliable neodymium (NdFeB) magnet supplier? Contact TOPMAG now! We provide customized solutions based on your specific application requirements, including shape, grade, surface treatment and performance customization. Professional technical team, 24-hour online consultation, global logistics support.

Note: Custom samples for special shapes/specifications may require a small mold fee, which will be refunded when placing a mass order (meeting the minimum order quantity).