NdFeB Magnet Powder (N52 GRADE)

Description

1. Product Overview
This product is a high-anisotropy Neodymium-Iron-Boron (NdFeB) magnetic powder, precision-milled to the N52 grade specification—the highest commercial energy product rating available for bonded and hot-deformed rare-earth magnets. Its primary industrial use is as the feedstock for compression-bonded, injection-molded, and hot-pressed permanent magnets, serving critical applications in traction motors, high-density sensors, and precision actuators. The key value proposition is unlocking maximum magnetic energy density (≥52 MGOe) in complex net-shape geometries. Strategically, it is vital for supply chains targeting electrification and miniaturization, offering a drop-in efficiency upgrade over lower-grade powders (N42/N48) without increasing component footprint.

2. Key Specifications & Technical Characteristics

• Chemical Composition: Nd-Fe-B alloy with proprietary heavy rare earth (Dy/Tb) doping for coercivity stability; typical ratio: Nd: 28–32%, Fe: 62–66%, B: 0.95–1.1%, balance: additives

• Grade & Purity: N52; magnetic particle purity >99.5%; oxygen content <2,500 ppm (optimized for binding matrix adhesion)

• Physical Characteristics:

  • Form: Free-flowing, micro-crystalline powder

  • Color: Dark gray metallic

  • Average particle size (D50): 45–105 µm (adjustable per molding technology)

  • Apparent density: 2.8–3.2 g/cm³

  • Magnetic orientation: Isotropic (ready for alignment pressing) or anisotropic pre-aligned variants available

• Packaging Options: 5 kg triple-laminated aluminum foil vacuum bags; 25 kg HDPE drums with desiccant; 500 kg vacuum-sealed super sacks (argon backfill optional)

• Shelf Life: 12 months in unopened packaging at <20°C / <35% RH; 6 months after opening if re-sealed under nitrogen

3. Core Industrial Applications

• Primary industries: Automotive electrification (EV traction motors), aerospace actuators, industrial robotics, high-end consumer electronics (e.g., automotive HUDs, precision audio drivers), and medical device linear motors.

• Specific operational use cases:

  • Rare-earth bonded magnets for EV oil pump motors – Replaces lower-grade (N42) powder to achieve same torque in 20% smaller rotor volume.

  • Injection-molded magnetic rings for servo encoders – N52’s high remanence (Br: 14.3–14.8 kGs) ensures signal stability at 150°C operating temperature.

  • Hot-deformed radial ring magnets for electric power steering (EPS) – Outperforms sintered magnets in impact toughness (no chipping) while delivering >90% of theoretical density.

• Performance advantage: Compared to N48 or N50 grades, N52 powder yields a 12–18% higher maximum energy product, enabling thinner magnet walls and lighter assemblies—directly reducing raw material consumption per unit of torque.

4. Competitive Advantages

• Quality consistency: ISO 9001:2025-certified production with real-time laser diffraction particle sizing; lot-to-lot Br variance ≤ ±1.5% (industry typical: ±3.5%).

• Supply reliability: Dual sourcing from two rare-earth separation facilities (non-conflict, licensed origins); 20MT monthly dedicated capacity with safety stock held in Rotterdam and Shanghai.

• Logistics capability: Export-ready packaging optimized for anti-moisture, anti-oxidation; door-to-door tracking with vibration/temperature data loggers for critical shipments.

• Price competitiveness: Direct offtake agreement with rare-earth refineries removes 2 intermediary layers; pricing formula pegged to Metal-Page daily index with transparent adjustment caps.

• Sustainability & technical support: 100% compliant with EU Conflict Minerals Regulation; free magnet performance simulation (ANSYS Maxwell) for client tooling design; SDS, REACH, RoHS, and TDS available pre-shipment.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): 500 kg (flexible trial program: 200 kg for first-time buyers with credit reference)

• Bulk loading capacity: 20 MT (20 metric tons) per 20-ft dry container utilizing 500 kg super sacks; 24 MT per 40-ft HC container with optimized palletization

• Lead time: 15 days ex-works for MOQ; 30 days for full 20MT bulk order after deposit confirmation

• Payment terms: LC at sight (irrevocable, confirmed) or 30% TT advance + 70% against copy of B/L for clients with audited trading history >$5M annual purchase volume