Zhejiang Laysun Magnetics Ltd. manufactures a wide array of high-grade Neodymium Iron Boron (NdFeB) products. Explore our featured selections below, designed to deliver exceptional magnetic force, coercive stability, and mechanical durability.
In high-precision assembly lines, the dimensional configuration of 6mm x 3mm Neodymium magnets represents an optimal balance between volumetric footprint and magnetic flux yield. These small, cylinder-type or disc-type permanent magnets are composed of a crystalline lattice of Neodymium, Iron, and Boron ($Nd_2Fe_{14}B$). They are typically manufactured through powder metallurgy, a process involving vacuum sintering, rapid solidification strip casting, and high-energy milling.
The 6mm diameter combined with a 3mm thickness provides a high shear resistance and concentrated axial magnetic field lines. This geometry is exceptionally suited for Hall effect sensors, rotational encoders, and miniaturized acoustic transducers where space is at a premium and a robust signal-to-noise ratio is mandatory. At Zhejiang Laysun Magnetics Ltd., we apply rigorous mechanical tolerance standards (down to ±0.02mm) to ensure compatibility with high-speed automated pick-and-place packaging systems.
For demanding environments, these magnets are protected with various electroplated or spray-coated finishes. The standard Ni-Cu-Ni (Nickel-Copper-Nickel) coating prevents oxidation in ambient environments, while specialized options such as Black Epoxy or Parylene-C are employed where corrosion resistance in salt-spray test environments must exceed 96 to 120 hours.
| Parameter | N35 Grade Specifications | N52 Grade Specifications | N38UH Grade (High Temp) |
|---|---|---|---|
| Remanence ($B_r$) | 1.17 - 1.22 T (11.7 - 12.2 kG) | 1.42 - 1.47 T (14.2 - 14.7 kG) | 1.22 - 1.25 T (12.2 - 12.5 kG) |
| Coercivity ($H_{cb}$) | ≥ 868 kA/m (≥ 10.9 kOe) | ≥ 876 kA/m (≥ 11.0 kOe) | ≥ 899 kA/m (≥ 11.3 kOe) |
| Intrinsic Coercivity ($H_{cj}$) | ≥ 955 kA/m (≥ 12.0 kOe) | ≥ 876 kA/m (≥ 11.0 kOe) | ≥ 1989 kA/m (≥ 25.0 kOe) |
| Max Energy Product ($(BH)_{max}$) | 263 - 287 $kJ/m^3$ (33 - 36 MGOe) | 398 - 422 $kJ/m^3$ (50 - 53 MGOe) | 287 - 310 $kJ/m^3$ (36 - 39 MGOe) |
| Max Operating Temperature | 80°C (176°F) | 60°C (140°F) | 180°C (356°F) |
| Standard Surface Flux (6x3mm) | ~ 3,100 Gauss | ~ 3,900 Gauss | ~ 3,300 Gauss |
Founded at the turn of the millennium, Zhejiang Laysun Magnetics Ltd. has rapidly evolved from a visionary startup to a global industry pacesetter. We specialize in the research, production, and worldwide sales of advanced rare earth NdFeB permanent magnets.
Our production facilities, spanning 100,000 square meters in the vibrant industrial hub of Suining, Sichuan, are structured for high-efficiency and scale. Zhejiang Laysun Magnetics Ltd. operates advanced strip-casting furnaces, helium gas jet mills, and fully automated vacuum sintering systems. With an annual production capacity of 5,000 tons, we satisfy massive supply commitments for tier-one automotive suppliers, consumer electronic giants, and industrial automation enterprises.
We are dedicated to establishing high standards of structural integrity and magnetic stability. Through careful alloy formulation and close monitoring of critical processing phases, we minimize performance variations between production runs, ensuring consistency across batch shipments.
At Laysun Magnetics, our ethos is built on four pillars: Quality, Credibility, Technology, and Innovation. These values govern our standard operating procedures, driving us to deliver permanent magnets that align with our clients' technical requirements.
We invest heavily in R&D to optimize NdFeB formula metallurgy, with a focus on reducing reliance on heavy rare earth elements (Dy, Tb) through Grain Boundary Diffusion (GBD) technology. This maintains high temperature stability while mitigating raw material cost fluctuations.
We aim to remain a reliable source of high-performance rare earth permanent magnets, supporting electric mobility, sustainable industrial technologies, and digital infrastructures with customized solutions.
China's dominant position in the rare earth supply chain offers significant downstream advantages for global buyers of NdFeB magnets. Zhejiang Laysun Magnetics Ltd. leverages these structural conditions to deliver cost efficiency and high quality.
Our strategic manufacturing base in Sichuan grants us direct access to local light and heavy rare earth extraction and refining sites. This proximity ensures a stable supply of Neodymium, Praseodymium, Dysprosium, and Terbium, insulating our production schedules from raw material bottlenecks.
Sintered NdFeB is highly brittle and challenging to machine. Our facility uses automated multi-wire slicing machines, CNC double-sided grinding platforms, and specialized chamfering systems to produce 6mm x 3mm magnets with high dimensional accuracy.
Sichuan's industrial infrastructure runs on a high proportion of clean hydroelectric energy. By using this local grid power for our high-temperature sintering ovens, we lower the overall carbon footprint of our manufacturing process, supporting green procurement initiatives.
Quality control is integrated throughout our manufacturing cycle. Raw materials are verified using Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) before melting. After sintering, internal grain orientation is evaluated using magnetic hysteresisgraph systems to measure exact remanence and intrinsic coercivity curves.
For the 6mm x 3mm size, automated optical sorting machines inspect dimensions and check for surface flaws, ensuring only defect-free parts are prepared for packaging.
The high magnetic flux density of NdFeB magnets supports the design of more compact and efficient equipment across various industrial sectors.
In electric vehicles (EVs) and conventional autos, 6mm x 3mm magnets are integrated into throttle position sensors, anti-lock braking system (ABS) encoders, and micro-motors for mirror adjustment, providing reliable performance in high-vibration environments.
Used in high-fidelity micro-speakers, dynamic headphones, and linear vibrators for haptic feedback. The field strength of our magnets supports clear sound reproduction and precise physical feedback in modern mobile devices.
With biocompatible coatings like Gold or Parylene, these small magnets are utilized in surgical tools, implantable devices, and laboratory diagnostics, where clean performance is required.
The transition toward clean energy relies on the efficiency of permanent magnet motors. By upgrading from ferrite or AlNiCo magnets to sintered NdFeB, motor designers can reduce structural weight by up to 50% while improving electrical-to-mechanical conversion efficiency.
Zhejiang Laysun Magnetics Ltd. works alongside engineering firms to design customized magnetic arrays, including Halbach configurations, to focus magnetic flux in specific regions and minimize leakage fields.
Industrial buyers need more than quality parts; they require supply chain security, regulatory compliance, and consistent delivery. We align our services with international procurement standards.
All NdFeB magnets manufactured by Zhejiang Laysun Magnetics Ltd. are compliant with EU RoHS and REACH directives. We provide complete material declaration sheets (MDS) and ensure our products do not contain heavy metals or SVHCs above authorized limits.
Our operations conform to ISO 9001 and ISO 14001 guidelines, and we are certified to support automotive supply chains. We offer PPAP Level 3 documentation, including Process Flow Diagrams, PFMEA, and Control Plans, to verify our manufacturing stability.
To view our manufacturing certifications, please contact our export department.
We manufacture magnetic materials tailored for specific industrial applications, ranging from micro-electronics to high-capacity industrial equipment.
Our products are integrated into high-performance applications in automation, computing, consumer electronics, and green transport.
Headquartered in Hangzhou, China, Zhejiang Laysun Magnetics Ltd. is building worldwide subsidiaries and regional offices to serve our customers across North America, Europe, and Asia-Pacific. We offer flexible shipping modes—including air express for rapid prototyping and container freight for high-volume contract orders—combined with custom magnetic shielding packaging to comply with IATA air cargo regulations.
Key engineering and design queries regarding 6mm x 3mm NdFeB magnets, coating options, and performance limits are addressed below.
Contact Zhejiang Laysun Magnetics Ltd. regarding your raw material requirements, volume projections, and custom design needs. Our engineering department responds to technical inquiries within 24 hours.
We provide magnetic components for diverse industrial needs, including high-capacity lifting blocks, MagSafe-compatible assemblies, and heavy-duty magnetic hooks.
Laysun Magnetics
