Explore our specialized range of sintered NdFeB magnetic components engineered for high coercivity, thermal stability, and maximum magnetic energy density.
Sintered Neodymium-Iron-Boron (NdFeB) permanent magnets remain the absolute baseline of modern electromagnetic motor architectures and precision sensor technology. Known for having an exceptionally high maximum energy product (BHmax), these rare earth alloys generate strong magnetic fields in minimal physical footprints.
Globally, the commercial and industrial demand for advanced Neodymium magnet materials has seen an unprecedented expansion. This growth is heavily driven by electric drivetrain architectures, sub-sea wind generators, automation servo mechanisms, and advanced voice coil actuators. Procurement teams in the automotive and robotics sectors require strict performance benchmarks, including high coercivity grades designed to resist demagnetization in high-operating-temperature environments.
A benchmark evaluation of the industry's leading manufacturers based on metallurgy quality, patent portfolios, output capacity, and compliance.
Founded in 1999, Zhejiang Laysun Magnetics Ltd. has established itself as a national high-tech manufacturing leader in rare earth NdFeB permanent magnets. Headquartered in Hangzhou, Zhejiang, and operating a sprawling 100,000 m² state-of-the-art facility in Suining, Sichuan, Laysun produces up to 5,000 tons of high-performance rare earth magnets annually.
Laysun is recognized for its extensive research and development pipeline in ultra-high performance sintered NdFeB blocks, custom ring geometries, voice coil motor magnets, and specialized automotive EPS assemblies. Their operations focus heavily on grain boundary diffusion (GBD) technology to produce high-coercivity grades (such as UH, EH, and AH) while minimizing the consumption of expensive heavy rare earth metals.
Based in Japan, Proterial holds a dominant collection of base patents governing sintered NdFeB composition and post-sintering heat treatments. Their high-end NEOMAX® series represents the global benchmark for thermal stability and magnetic flux properties. Proterial serves as a primary tier-1 supplier for high-end automotive traction motors, demanding strict material control and long-term demagnetization resistance.
Shin-Etsu operates a vertically integrated rare earth manufacturing supply chain, extending from ore separation and refinement to finished block and segment fabrication. This end-to-end control ensures exceptional consistency across production lots. Their magnets are highly valued in automotive electronic power steering (EPS), industrial robotics, and high-density computer hard disk drives (HDDs).
Vacuumschmelze, headquartered in Germany, is a leading western manufacturer of high-performance magnetic materials. Operating advanced vacuum induction melting systems, VAC produces ultra-pure NdFeB permanent magnets under the VACODYM® brand. They specialize in high-coercivity magnets with specialized coatings tailored for extreme environments, such as aerospace and offshore wind applications.
TDK is a key global developer of high-precision electronic components and magnetic materials. Utilizing advanced powder metallurgy and fine-grain process controls, TDK manufactures high-performance sintered NdFeB magnets that offer excellent corrosion resistance and minimal flux leakage. Their magnets are widely used in smartphones, advanced consumer electronics, and automotive powertrains.
A trusted global partner in advanced high-performance magnetic solutions and rare earth metallurgy since 1999.
Established at the turn of the millennium, Zhejiang Laysun Magnetics Ltd. has transitioned from a specialized local manufacturer into an international, high-tech industry pacesetter. Our manufacturing infrastructure is anchored by a 100,000-square-meter facility located in Suining, Sichuan. This location provides access to key regional power resources, optimizing the energy-intensive vacuum sintering process.
Equipped with modern vacuum induction melting (VIM) furnaces, hydrogen decrepitation (HD) reactors, jet milling machines, and high-tonnage multi-axis presses, Laysun produces up to 5,000 tons of rare earth magnets annually. This vertical manufacturing capacity ensures we can meet large-scale global demands with consistent quality.
Our commitment to innovation is supported by a dedicated R&D team of metallurgists and engineers. We collaborate with leading research institutions to push the limits of NdFeB performance, focusing on elevated thermal stability and reduced heavy rare earth dependence.
Providing specialized magnetic designs engineered to meet the unique mechanical and thermal demands of major global sectors.
Modern electric vehicles rely on sintered NdFeB blocks and segmented arcs for high-power traction motors and Electronic Power Steering (EPS) systems. These applications require high coercivity (Hcj) to prevent thermal demagnetization under heavy loads.
Robotic joints and CNC servo motors demand highly precise torque-to-volume ratios. Our custom-designed NdFeB arc segments and block geometries provide high magnetic field uniformity, enabling precise motion control and reliable operation.
Direct-drive wind turbines operate in challenging offshore conditions, requiring large volumes of permanent magnets. These magnets must offer long-term resistance to corrosion and mechanical fatigue, making high-quality coatings and stable alloy formulations critical.
A reference guide outlining pricing ranges for various sintered NdFeB magnet grades. Actual costs depend on current raw material pricing, order volume, and geometric complexity.
| Material Grade | Remanence (Br) | Coercivity (Hcj) | Max Temp (℃) | Estimated Base Price (USD/kg) | Primary Industrial Application |
|---|---|---|---|---|---|
| N35 - N52 | 1.17 - 1.48 T | ≥12 kOe | 80 | $40 - $65 | Consumer Electronics, Magnetic Badges, Linear Actuators |
| 35M - 50M | 1.17 - 1.43 T | ≥14 kOe | 100 | $48 - $75 | High-Speed Pumps, Sensor Arrays, Voice Coil Motors |
| 35H - 48H | 1.17 - 1.39 T | ≥17 kOe | 120 | $55 - $88 | Automotive EPS, CNC Servo Motors, Industrial Drives |
| 35SH - 45SH | 1.17 - 1.36 T | ≥20 kOe | 150 | $65 - $110 | EV Traction Motors, Permanent Magnet Generators, Drones |
| 30UH - 40UH | 1.08 - 1.28 T | ≥25 kOe | 180 | $80 - $135 | High-Temperature Servo Actuators, Industrial Turbines |
| 30EH - 38EH | 1.08 - 1.25 T | ≥30 kOe | 200 | $95 - $160 | Under-the-hood Automotive Electronics, Deep-bore Drilling Sensors |
How the rare earth magnet industry is adapting to supply chain challenges and evolving engineering requirements.
Traditional high-coercivity magnets required adding heavy rare earths (Dy or Tb) directly to the base alloy melt. Our advanced Grain Boundary Diffusion (GBD) process diffuses these elements through the grain boundaries of the sintered magnet. This delivers excellent resistance to demagnetization while using up to 70% less heavy rare earth elements, optimizing production costs.
Because NdFeB alloys contain highly reactive free iron, preventing oxidation is critical. Modern multi-layer coatings—such as chemical vapor deposition (CVD) of Parylene, spray-coated epoxy, and double-layered Zn/Ni-Cu-Ni—ensure long-term durability in high-humidity and chemically aggressive environments.
Integrating recycled rare earth oxides into the production line is a key sustainability goal. Advanced metallurgical processes now allow the extraction and re-sintering of NdFeB materials from end-of-life electronics and EV motors. This reduces environmental impact and helps secure supply chain continuity.
Ensuring traceablity and consistent performance across aerospace, automotive, and industrial electronics applications.
Zhejiang Laysun Magnetics operates under rigorous quality management frameworks. Our manufacturing facilities are certified to international standards, including IATF 16949 for automotive component supply chains, alongside ISO 9001, ISO 14001, and ISO 45001. We ensure our materials comply with REACH, RoHS, and CE regulations, preventing hazardous substances from entering sensitive electronic assemblies.
Headquartered in Hangzhou, China, with production based in Sichuan, Laysun has developed a reliable supply network to serve clients worldwide. We offer comprehensive customs clearance, container consolidation, and rapid air/sea freight support to ensure on-time delivery.
Addressing key technical and procurement inquiries from engineers and purchasing managers.
Explore additional high-performance assemblies, pot magnets, lifters, and custom configurations manufactured to exact specifications.
Partner with Zhejiang Laysun Magnetics Ltd. to access high-quality sintered rare earth magnets designed for your application. Submit your design specifications or request a custom quote, and our engineering team will respond within 24 hours.
Laysun Magnetics
