Our extra strong magnets are crafted with ≥95% pure neodymium raw materials, eliminating impurities that weaken magnetic force. We use high-cost dysprosium (Dy) instead of cheap holmium iron, enhancing both magnetic strength and high-temperature stability. This combination ensures our magnets maintain their extra strong magnetic force even at operating temperatures up to 180℃, with annual demagnetization rate below 0.5%—well below the industry average of 1.2%.
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extra strong magnets
As a pioneering manufacturer with 30 years of focus on high-performance magnetic materials, we specialize in producing extra strong magnets that redefine industry standards for magnetic strength and reliability. Our extra strong magnets leverage advanced material science and full-chain manufacturing—from high-purity neodymium raw materials (sourced from listed companies, no recycled materials) to proprietary dysprosium-added formulas—delivering magnetic energy product (BHmax) up to 52 MGOe and remanence (Br) reaching 1.5T, far exceeding standard magnets on the market. Designed for critical applications like high-efficiency motors, medical equipment, industrial lifting systems, and precision sensors, these magnets offer unmatched pull force while maintaining exceptional temperature stability and corrosion resistance. As a direct manufacturer, we control every production step to ensure batch-to-batch consistency, making our extra strong magnets the trusted choice for global clients requiring peak magnetic performance.
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Product Description
Extra Strong Magnets: High-Energy Permanent Solutions for Demanding Applications
Key Advantages of Our Extra Strong Magnets
High-Purity Material & Rare Earth Enhancement
Industry-Leading Magnetic Energy Product
Our extra strong magnets cover high-grade neodymium series (N52-N55, SH/UH/EH/AH grades) with magnetic energy product ranging from 48-52 MGOe. This translates to exceptional pull force—for example, a 20×10×5mm N55 magnet can lift up to 15kg, outperforming standard N42 magnets by 40%. Advanced sintering and heat treatment processes ensure uniform magnetic field distribution, avoiding weak spots that compromise performance in precision applications.
Precision Machining & Durable Coating
Even with their extra strong magnetic force, our extra strong magnets maintain tight dimensional tolerances of ±0.01mm via CNC grinding and slicing. We apply a uniform Ni-Cu-Ni triple-layer coating (5μm per nickel layer) through fully automated electroplating lines, providing superior corrosion resistance—passing 72-hour salt spray tests. Custom coatings (Epoxy, Au, Ag) are available for harsh environments, ensuring long-lasting performance in marine, automotive, and industrial settings.
Technical Specifications: Extra Strong Magnets Grades
The following table outlines our core range of extra strong magnets, focusing on high-energy grades and key performance parameters. Custom sizes, grades, and magnetic specifications are available to meet your specific application requirements.
| Grade | Magnetic Energy Product (BHmax) MGOe | Remanence (Br) mT | Intrinsic Coercivity (Hcj) kA/m | Max. Operating Temp (°C) | Pull Force (20×10×5mm) kg | Typical Applications |
|---|---|---|---|---|---|---|
| N52 | 48-50 | 1430-1480 | ≥1350 | 80 | 12-13 | Precision sensors, high-performance motors |
| N55 | 50-52 | 1480-1520 | ≥1350 | 80 | 14-15 | Industrial lifting equipment, medical devices |
| N52SH | 47-49 | 1400-1450 | ≥1590 | 150 | 11-12 | High-temperature motors, aerospace components |
| N48UH | 44-46 | 1320-1360 | ≥1990 | 180 | 9-10 | Automotive EPS systems, high-temperature sensors |
Quality Assurance & Global Compliance
Our extra strong magnets undergo a 15-step quality control process, from raw material spectrometry analysis to final magnetic performance testing. We use advanced equipment including X-ray thickness gauges (for coating inspection), HAST accelerated aging for durability testing, and high-precision Gauss meters (for magnetic field measurement). All magnets are certified to IATF 16949, ISO 9001, REACH, and RoHS standards, with SGS test reports available for every batch—ensuring seamless export to Europe, North America, and Asia-Pacific markets. Our full-process quality control ensures batch-to-batch magnetic performance fluctuation below 2%, critical for large-scale production of high-precision equipment.
IATF 16949:2016 ISO 9001:2015 REACH & RoHS Compliant SGS Magnetic Test Certified EPA CP65 Compliant
Packaging & Technical Support
To protect the extra strong magnetic force of our extra strong magnets during transit, we use 8-cell reinforced inner boxes with anti-magnetic liners to prevent mutual attraction and chipping, followed by export-grade cartons with foam padding. For custom large-size magnets, we add shock-absorbing materials to withstand long-distance shipping. We offer free technical support including magnetic circuit design, material selection, and application optimization—our engineering team responds within 4 business hours to address your technical queries.
Need Extra Strong Magnets for Your High-Demand Project?
Whether you require standard high-grade extra strong magnets or custom solutions with specific dimensions, grades, or coatings, we have the expertise and manufacturing capacity to deliver. We offer free sample requests (up to 3 pieces) for performance testing, fast prototyping (7-10 business days), and flexible bulk delivery options to meet your production timeline.
Contact us via WhatsApp/WeChat/Tel: +86-18226620303 | Free technical consultation & sample testing available.
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