Excellent temperature stability High-Performance Sintered Neodymium rectangular shaped Iron Boron Magnets

1. Product Overview & Application Scenarios

Introducing our premium-grade high quality Excellent temperature stability High-Performance Sintered Neodymium bar magnet, designed with sleek rounded edges and a polished finish for superior performance and aesthetic appeal. Crafted from high-purity rare earth materials (N52/N50/N48 available), this magnet delivers exceptional magnetic strength, corrosion resistance, and dimensional precision—making it the perfect choice for a wide range of industrial, engineering, and creative applications.

Whether you're building motors, fabricating magnetic assemblies, prototyping in R&D, or seeking robust magnetism for DIY and tech setups, this industrial use energy efficient stable excellent temperature stability High-Performance Sintered Neodymium rectangular shaped Iron Boron Magnet delivers uncompromising strength and stability

Application Scenarios

Home & Creative Applications

Magnetic Locks & Furniture Hardware

Ideal for wardrobe doors, drawers, and cabinet closures, providing a silent, wear-free magnetic sealing solution.
Sleek in appearance, suitable for both surface-mounted and embedded installation.

Storage & Display Solutions

Perfect for magnetic tool racks, knife holders, and display stands on metal surfaces, offering strong attraction without damaging items.
Also serves as the embedded magnetic source in magnetic hooks or decorative accessories.

Electronics & Communication

Smart Devices & Modular Attachments

Applied in tablet covers, charging modules, and wireless accessories for magnetic structural connection.
Common in consumer electronics for detachable components and magnetic connectors.

 Audio Equipment

Utilized in the magnetic circuits of microphones, earphones, and speakers to ensure consistent and stable audio magnetic performance.

Motors & Generators

Used as rotor/stator magnets in permanent magnet motors, ideal for brushless DC motors, wind turbines, and high-speed spindles.
The arc-shaped design ensures a tight fit within the motor’s inner diameter, improving magnetic flux density and energy efficiency.

2. Technical Specifications

- Product Name: Excellent temperature stability High-Performance Sintered Neodymium rectangular shaped Iron Boron Magnets

- Magnet Grade: N52 (Br ≥14.2 kGs, Hcj ≥12 kOe)

- Dimension: L8x4x3mm

- Dimensional Tolerance: +/-0.05 

- Operating Temperature: ≤80°C (High-temp versions available)  

- Density: ≥7.5 g/cm³  

- Surface Magnetic Field: 3,500 Gs  

- Magnetic Flux : 2.0 mWb  (Fluxmeter-tested)  

3. Surface Treatment & Coating Technology

To enhance this precision customized professional grade excellent temperature stability strong magnetic force high-performance Sintered Neodymium rectangular shaped Iron Boron Magnet’s corrosion resistance, surface quality, and magnetic stability, the following treatments are used:

Edge Reinforcement: Laser cladding with nickel-based alloy at magnet seams (prevents electrochemical corrosion)

Edge Rounding: Reduces magnetic field distortion

Default Coating: Triple layer Ni-Cu-Ni (customizable)

Standard Thickness: Ni (3μm) + Cu (5μm) + Ni (4μm)

Optional Coatings: Gold or silver plating for better conductivity and corrosion resistance

4. Reliability Testing

Impact & Vibration Test: Simulates shipping and usage conditions to ensure operational stability.

Constant Temperature & Humidity Test: Performed under 85°C and 85% RH for 96–500 hours. Performance and appearance are compared before and after testing.

Damp Heat Test: Evaluates resistance to high humidity and corrosion

5. Packaging & Transportation

Defect Elimination: 100% inspection using calipers, projectors, visual checks, and automated systems to reject cracked, chipped, oxidized, or coated-defective magnets.

Uniform Magnetization & Structured Arrangement: Magnets are uniformly magnetized and arranged for optimal packaging based on customer requirements to ensure performance and facilitate automated assembly.

Vacuum Sealed Packaging: Multi-layer vacuum sealing with moisture barriers, desiccants or nitrogen, prevents corrosion and magnetic interference during storage and shipping.

Customized Outer Packaging: Shock-proof, moisture-resistant, and anti-magnetic leakage packaging (e.g., multilayer cartons, plastic boxes, metal shielding) ensures compliance with international logistics standards. Each box includes a product list, labels, and tracking codes.

6. Why Choose us ？

Dongguan Jinconn New Material Holdings  Co., Ltd. is a publicly listed enterprise offering integrated R&D, manufacturing, and sales of rare earth magnets. Based in Xiaohe Industrial Zone, Daojiao Town, Dongguan, we serve clients across China and globally.

⭐20+ years of magnet manufacturing expertise

⭐Strict quality control & customization capability

⭐Multilingual technical support with global delivery

⭐RoHS and REACH compliant

Please contact us for free samples, magnet customization solutions, and MSDSRoHS, ISO 9001, QC080000, IATF 16949, ISO 14001, ISO 27001 or other relevant certificates!

7.  Usage Precautions？

⚠ Safety & Handling Guidelines

Handle with care: Neodymium magnets are brittle and can chip or crack if dropped or impacted.

Avoid injury: Always slide magnets apart—do not force or pry them to separate.

Check polarity before use: Incorrect installation may cause malfunction or damage to equipment.

Store properly: Keep in a dry, neutral environment; avoid contact with moisture, acids, or corrosive substances.

Keep away from sensitive electronics: Do not place near hard drives, magnetic cards, pacemakers, or similar devices.

8. Customization & Services

Customizable magnet dimensions, geometry, and surface coatings (including layer count, thickness, and color)

Precision magnetization orientation and adjustable magnetic field intensity

Optional laser marking for logos, part numbers, or traceability codes

Specialized packaging and pull-force testing tailored to your application needs

With deep expertise in magnetic materials, we deliver solutions for industries like EVs, smart manufacturing, and electronics. Our strong technical capabilities and product consistency have earned the trust of customers worldwide.

·  Precision Magnetics, Tailored for Performance.

If you have any magnet-related needs, we offer free customized magnet services. Please feel free to contact us at any time.

Contact Us：
 Phone/WhatsApp/WeChat: +86 13829120676

 Email: Info@jinconn.com

 Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong Province, China.