Views: 0 Author: Site Editor Publish Time: 2026-01-26 Origin: Site
N52 is the highest-grade neodymium magnet with exceptional magnetic strength and high remanence. However, the market is flooded with mislabeled, counterfeit, and low-quality products. Follow these 5 steps to source genuine N52 magnets for your business.
1. Insist on Authoritative Testing & Certifications
• Require third-party test reports (ISO, ASTM, GB/T standards) verifying key magnetic properties: Remanence (Br), Coercivity (Hcj), and Maximum Energy Product (BH)max. For genuine N52, (BH)max ≥ 52 MGOe.
• Prioritize suppliers with RoHS and REACH compliance to ensure safe plating and non-hazardous materials.
2. Verify Manufacturer Qualifications & Production Process
• Choose specialized neodymium magnet manufacturers with 10+ years of experience that control the full production chain: melting → milling → pressing → sintering → testing. Avoid traders or OEM-only suppliers.
• Confirm use of vacuum melting, isostatic pressing, and precision sintering—critical for stable N52 performance. Low-grade magnets skip these steps, leading to rapid demagnetization.
3. Watch for Unrealistically Low Prices
• N52 magnets require premium raw materials and complex processing, so they cost significantly more than N35/N42 grades. Any "N52" priced far below market rate is almost certainly mislabeled.
• Compare quotes for identical specifications (size, plating, tolerance) – large price discrepancies are a red flag.
4. Request Samples & Conduct In-House Testing
• Order free or paid samples before bulk purchase. Test with a gauss meter and pull force tester: a genuine N52 Φ20×10mm cylinder typically delivers ≥80kg vertical pull force (depending on contact surface).
• Reject samples where measured values deviate >5% from the test report.
5. Clarify Contract Terms & After-Sales Policies
• Include in the contract: grade (N52), dimensional tolerance, plating type, performance specs, and testing standards.
• Agree on rejection/return for non-conformity and batch inspection rules, and keep test samples for reference.
