Explore our engineering-grade magnetic materials custom manufactured to target strict thermal and coercive specifications.
Neodymium-Iron-Boron (NdFeB) magnets represent the pinnacle of modern magnetics, providing the highest energy product ($(BH)_{max}$) of any commercially available permanent magnetic material. In industrial applications where volume-to-performance efficiency is critical, sintered NdFeB is the default choice.
The tetragonal crystal structure of $Nd_2Fe_{14}B$ possesses exceptionally high uniaxial magnetocrystalline anisotropy, meaning the crystal magnetizes preferentially along a specific axis. This atomic-level characteristic permits the engineering of extremely high coercivity ($H_{cj}$), enabling these components to resist powerful demagnetizing fields and maintain alignment at severe operational temperatures.
Sintered NdFeB elements are produced by vacuum furnace induction melting of raw elements, pulverization into micro-powders, magnetic alignment shaping, and subsequent sintering. Bonded NdFeB, by comparison, embeds the powder within thermoplastic polymers, offering complex net-shape geometries at the sacrifice of total magnetic flux density.
Providing values ranging from 35 MGOe up to N52 and N54 grades (exceeding 50 MGOe), allowing extreme miniaturization of electric rotors and structural arrays.
Specially customized AH, EH, UH, and SH grades engineered to operate seamlessly at elevated temperatures reaching up to 220°C in automotive traction motors.
Custom multilayered plating configurations including Everlube, Parylene, Rubber-Encapsulation, Zinc, and High-Purity Ni-Cu-Ni to prevent oxidation degradation.
Founded in 1999, Zhejiang Laysun Magnetics Ltd. has established itself as a national high-tech manufacturing enterprise focused exclusively on the metallurgy, design, machining, and stabilization of advanced rare earth permanent magnet materials.
Our principal manufacturing plant, covering an expansive footprint of 100,000 square meters in the specialized chemical and industrial production zone of Suining, Sichuan, hosts highly automated production lines. Backed by 300+ engineering and logistics professionals, our facility reaches an annual yield capacity of 5,000 tons of high-performance rare earth NdFeB magnets.
How vertical integration and regional raw material abundance secure stable pricing and supply chains for global enterprises.
By establishing manufacturing in Sichuan, Zhejiang Laysun Magnetics positions operations near critical rare earth extraction and separation hubs. This proximity grants direct allocation of Praseodymium-Neodymium (PrNd), Dysprosium (Dy), and Terbium (Tb), buffering our clients against international raw material price volatility.
From the initial vacuum induction melting through hydrogen decrepitation, jet milling under nitrogen protection, alignment pressing, sintering, machining, and final coating, every single process step is performed inside our own ISO/IATF certified factory boundary, eliminating third-party yield risks.
By leveraging advanced multi-cavity press tools, automated wire-cutting, high-precision slicing, and low-waste machining processes, we optimize the utilization coefficient of rare earth elements, translating directly into optimized quotes and transparent wholesale pricelists for global enterprises.
Over the past two decades, Zhejiang Laysun Magnetics Ltd. has transitioned from standard magnetic components production to highly specialized engineered arrays. Our research division collaborates with national materials science institutes to develop low-heavy-rare-earth (Low-Dy/Tb) diffusion technology.
This proprietary grain boundary diffusion (GBD) process diffuses Dysprosium or Terbium selectively along the crystalline grain boundaries. This allows the magnet to achieve high intrinsic coercivity ($H_{cj}$) required for EV motors and wind generators, while reducing overall heavy rare earth usage and lowering overall component costs.
Review the physical limits, thermal thresholds, and remanence parameters across our primary grade series.
| Grade Series | Remanence ($B_r$) [T] | Coercivity ($H_{cb}$) [kA/m] | Intrinsic Coercivity ($H_{cj}$) [kA/m] | Max Energy Product ($(BH)_{max}$) [MGOe] | Max Operating Temp (°C) |
|---|---|---|---|---|---|
| N35 - N54 (Standard) | 1.17 - 1.50 | ≥ 876 - 915 | ≥ 955 | 33 - 55 | 80°C |
| 35M - 52M (Medium Temp) | 1.17 - 1.48 | ≥ 876 - 915 | ≥ 1114 | 33 - 53 | 100°C |
| 35H - 50H (High Temp) | 1.17 - 1.45 | ≥ 876 - 955 | ≥ 1353 | 33 - 51 | 120°C |
| 30SH - 48SH (Super High) | 1.08 - 1.41 | ≥ 812 - 955 | ≥ 1592 | 28 - 49 | 150°C |
| 30UH - 45UH (Ultra High) | 1.08 - 1.36 | ≥ 812 - 955 | ≥ 1989 | 28 - 46 | 180°C |
| 28EH - 40EH (Extremely High) | 1.04 - 1.28 | ≥ 764 - 923 | ≥ 2387 | 26 - 41 | 200°C |
| 28AH - 35AH (AH Series) | 1.04 - 1.21 | ≥ 764 - 907 | ≥ 2785 | 26 - 36 | 220°C |
We supply precision-manufactured permanent magnet components tailored to complex international technology fields.
Explore custom magnetic assemblies, robust pot magnets, and heavy-duty motor components engineered to your requirements.
For Tier-1 automotive and global aerospace suppliers, sourcing permanent magnets involves strict regulatory standards. Zhejiang Laysun Magnetics maintains a robust compliance framework, ensuring our materials satisfy global environmental regulations.
Our NdFeB compositions are strictly verified free from substances of very high concern (SVHC) under the EU REACH directive, and maintain full compliance with RoHS and TSCA regulations. We run extensive quality control inspections to guarantee zero heavy metal contamination, protecting your product's lifecycle from development to international distribution.
Headquartered in Hangzhou, China, Zhejiang Laysun Magnetics Ltd. operates a global network of logistics partners. We support multimodal logistics, containerized cargo tracking, customs handling, and local technical consulting. If you require technical guidance, on-site support, or localized delivery options, our engineering teams are available to support you.
ISO 9001
ISO 14001
IATF 16949
Our certifications include ISO9001, ISO14001, OHSAS18001, CE, and compliance with API 6D and API 607 manufacturing protocols. Contact our sales department to receive verified copies of our certificates.
How technical and material innovations are reshaping global permanent magnet sourcing.
Driven by smart consumer electronics and mobile haptic feedback loops, the demand for high-uniformity, micro-scale NdFeB disc and ring magnets has increased. Manufacturers are adjusting to tighter mechanical and magnetic tolerances to ensure consistent performance.
Modern industrial supply chains emphasize circular-economy compliance. Recycling programs that reclaim NdFeB magnets from end-of-life EV motors, wind turbines, and industrial scrap help reduce geopolitical supply risks and support lower carbon footprints.
To reduce dependence on volatile Dysprosium (Dy) and Terbium (Tb) supplies, manufacturers are utilizing Grain Boundary Diffusion (GBD) technology. GBD places heavy rare earths only at the grain boundaries, optimizing thermal stability at lower cost.
Get professional answers regarding sourcing, customization, pricing structures, and technical parameters of neodymium magnets.
Neodymium magnet pricelists are determined by several key variables:
Grain Boundary Diffusion (GBD) is a post-sintering process that introduces heavy rare earth elements (Dy or Tb) at the grain boundaries of the NdFeB alloy rather than throughout the entire matrix. This method selectively increases the localized anisotropy field at the boundary junctions—where demagnetization typically begins—thereby significantly boosting intrinsic coercivity ($H_{cj}$) without sacrificing remanence ($B_r$) or material yield efficiency.
Standard NdFeB is prone to oxidation in humid or corrosive environments. For marine applications, high-humidity industrial sensors, or outdoor equipment, we recommend:
Yes. We offer custom magnetization patterns for automotive EPS, EV drivetrains, and wind turbines. This includes radial magnetization, multi-pole alignment, and skewed magnetization patterns. Our facility is equipped with high-energy capacitor discharge magnetizers and custom magnetization fixtures designed to meet precise structural tolerances.
For custom production runs, the standard delivery time is 20 to 30 days, which covers tooling configuration, pressing, sintering, machining, plating, and testing. MOQs vary depending on magnet size, geometry, and grade. Generally, standard shapes have lower MOQs, while specialized, high-grade custom designs are quoted on a project-by-project basis. Please contact our sales team to discuss your specific requirements.
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Zhejiang Laysun Magnetics Ltd. | Advanced Rare Earth Magnet Engineering & Development
Corporate Office: Hangzhou, Zhejiang Province, China | Sintering Plant: Suining, Sichuan Province, China
API 6D, API 607, CE, ISO9001, ISO14001, ISO18001, IATF 16949 Registered Facility.
Laysun Magnetics