SMON6920 1/4 x 1/16 Inch Neodymium Rare Earth Gold Plated Disc Magnet N52

Brand Description

Stanford Mgnets, a company specializing in the research and production of advanced materials, guarantees that each of its products reaches international leading standards through meticulous craftsmanship and strict quality control. The 1/4 x 1/16 Inch Neodymium Rare Earth Gold Plated Disc Magnet N52, with its exceptional magnetic strength (52 MGOe) and corrosion-resistant gold plating, delivers reliable holding power and durability for precision applications in electronics, industrial systems, and medical devices.

Related Products: Plastic Coated Magnets

1/4 x 1/16 Inch Neodymium Rare Earth Gold Plated Disc Magnet N52 Specifications

Properties

*The above product information is based on theoretical data. For specific requirements and detailed inquiries, please contact us.

1/4 x 1/16 Inch Neodymium Rare Earth Gold Plated Disc Magnet N52 Description

The Neodymium Rare Earth Gold Plated Disc Magnet N52 is composed of a neodymium-iron-boron (NdFeB) alloy, delivering a maximum energy product of 52 MGOe, the highest grade commercially available. Measuring 6.35 mm (1/4") in diameter and 1.59 mm (1/16") in thickness, it features a triple-layer gold-nickel plating that provides robust corrosion resistance against humidity and oxidation, extending its operational lifespan. The magnet is axially magnetized through its thickness, generating a surface field of 4,800 Gauss and a pull force of 0.65 lbs. Its Curie temperature is 310°C, with a maximum operating temperature of 80°C, beyond which irreversible flux loss occurs. The gold plating enhances electrical conductivity and minimizes demagnetization risks in dynamic applications. Due to its inherent brittleness, careful handling is advised to prevent chipping or cracking.

1/4 x 1/16 Inch Neodymium Rare Earth Gold Plated Disc Magnet N52 Applications

Electronics: Miniature speakers, microphones, and sensors in smartphones, wearables, and IoT devices.

Industrial: Precision actuators, stepper motors, magnetic couplings, and encoders in automation systems.

Medical: Surgical instruments, MRI components, and implantable device assemblies.

Consumer Products: Magnetic closures for jewelry, accessories, and hobbyist projects (e.g., model building).

Renewable Energy: Rotor assemblies in small-scale wind turbines and energy-harvesting modules.

1/4 x 1/16 Inch Neodymium Rare Earth Gold Plated Disc Magnet N52 Packaging

To ensure safety during transportation and compliance with shipping regulations, all magnets are securely packed with a metal shielding layer inside the box. This prevents magnetic interference with surrounding items and protects the product from external damage.

Packaging: Carton, Wooden Box, or Customized.

1/4 x 1/16 Inch Neodymium Rare Earth Gold Plated Disc Magnet N52 FAQs

Q1. Why use gold plating instead of nickel?

Gold plating provides superior corrosion resistance in high-humidity/chemical environments, enhances electrical conductivity, and prevents oxidation for long-term reliability.

Q2. How should the axial magnetization direction be used?

Magnetic field flows through the 1.59mm thickness. Maximize pull force by attaching to flat ferrous surfaces perpendicular to the disc face.

Q3. Do these magnets lose strength over time?

No measurable decay if stored below 80°C with >5mm separation. Annual flux loss is <0.1% under standard conditions. Avoid AC fields >3 kOe to prevent demag.

Related Information

1. Common Preparation Methods

Neodymium magnets are manufactured via powder metallurgy. Neodymium, iron, and boron raw materials are melted in a vacuum induction furnace, cooled into ingots, and pulverized into micron-sized particles. The powder is compacted under a magnetic field to align crystallographic orientations, then sintered at 1,080–1,100°C in argon to form dense blocks. These blocks are heat-treated to optimize coercivity, machined to precise dimensions using diamond tools, and plated with nickel-copper undercoating followed by a gold top layer via electrodeposition. Finally, the discs are axially magnetized in a pulsed field exceeding 3 Tesla. Quality control includes eddy-current testing for coating integrity and Helmholtz coil verification of magnetic strength.