Outdoor corrosion resistant high coercivity Countersunk Neodymium Block Magnets
1. Product Overview & Application Scenarios
Ideal for a wide range of uses, these industrial use energy efficient outdoor corrosion resistant high coercivity Countersunk Neodymium Block Magnets are excellent for both commercial and DIY applications. In industrial environments, outdoor corrosion resistant high torque high coercivity Countersunk Neodymium Block Magnets are frequently employed to secure heavy-duty parts, mount metal fixtures, and stabilize equipment, delivering a strong magnetic grip that endures tough conditions. Their durable construction also suits the building sector, where they assist in fastening structural components, bracing large metal beams, and forming magnetic locking systems. For household purposes, they work well for projects such as crafting magnetic shelving, arranging tools, or anchoring heavy furniture. Their adaptability makes them a practical solution for both work and home endeavors.
2. Technical Specifications
- Product Name: Outdoor corrosion resistant high coercivity Countersunk Neodymium Block Magnets
- Magnet Grade: N42 (Br ≥12.9 kGs, Hcj ≥12 kOe)
- Dimension: 10mm x 10mm x 5mm x (5mm Hole）
- Dimensional Tolerance: +/-0.05
- Operating Temperature: ≤80°C (High-temp versions available)
- Density: ≥7.5 g/cm³
- Surface Magnetic Field: 2,800 Gs
- Magnetic Flux : 2.0 mWb (Fluxmeter-tested)
3. Surface Treatment & Coating Technology
To enhance these thermal stable high adhesive force high coercivity Countersunk Neodymium Block Magnets’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
Coating Benefits
Salt spray resistance and improved oxidation durability
Higher surface hardness and scratch 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.
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.
We understand logistics is more than just transport — it's about your commitment and customer satisfaction. Our solutions offer:
Global logistics support
End-to-end visual tracking
Multiple layers of transport safety
One-on-one customer service for tailored shipping plans
With our reliable land, sea, and air logistics network, we empower your business to go further and soar higher.
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.
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.
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？
Handle gently: Avoid impacts/drops (brittle material).
Prevent pinching: Slide magnets apart—do not pry.
Polarity check: Install correctly to avoid malfunctions.
Avoid moisture/acids: Store in dry, mild environments.
Keep away from sensitive devices: Hard drives, IC cards, pacemakers, etc.
8. Customization & Services
Custom magnet size, shape, and coating (layers, thickness, color)
Tailored magnetization direction and field strength
Laser engraving service for logos or serial numbers
Packaging and suction force testing for special applications
Please contact us for free samples, magnet customization solutions, and MSDSRoHS, ISO 9001, QC080000, IATF 16949, ISO 14001, ISO 27001 or other relevant certificates!
Phone/WhatsApp: +8614716150318
Email: leo@jinconn.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong Province, China
