12x1.5mm Neodymium Disc Magnets, N42 - Image 1

12x1.5mm Neodymium Disc Magnets, N42 - Image 2

12×1.5mm Neodymium Disc Magnets, N42

A 12×1.5mm N42 Neodymium Disc Magnet is an ultra-thin, high-strength permanent rare-earth magnet characterized by its compact, low-profile coin shape.

Key Technical Specifications

- Dimensions: 12 mm diameter x 1.5 mm thickness (approximately 1/2″ x 1/16″). [1]
- Material Composition: NdFeB (Neodymium-Iron-Boron). [1, 2]
- Magnetic Grade: N42 (features a Maximum Energy Product of ~42 MGOe, offering a strong balance between magnetic power and cost-efficiency). [1]
- Magnetization Direction: Axially magnetized (the north and south poles are located on the flat circular faces). [1]
- Pull Force: Typically ranges between 0.75 kg and 1.22 kg (~1.6 to 2.7 lbs) when in direct flush contact with a flat steel surface, depending on the manufacturer and testing conditions. [1, 2]
- Surface Coating: Triple-layered Ni-Cu-Ni (Nickel-Copper-Nickel) plating, which provides a smooth, shiny silver appearance and helps protect the brittle iron core from rust and corrosion. [1, 2]
- Maximum Operating Temperature: 80°C (176°F). Exceeding this temperature can cause permanent demagnetization. [1, 2]
- Manufacturing Tolerance: Usually +/- 0.05 mm. [1, 2]

Common Applications

Due to their incredibly slim 1.5mm profile and high pull force, these discs are ideally suited for applications requiring strong magnetism in restricted spaces: [1, 2]

Crafts and Model Making: Scale miniature models, tabletop gaming pieces, and DIY projects.
Closures: Hidden magnetic clasps for premium packaging boxes, leather bags, portfolios, and high-end apparel.
3D Printing: Embeds smoothly into flush recessed joints or custom-printed enclosures.
Displays: Whiteboards, point-of-sale retail displays, and flush refrigerator magnets.
Electronics and Sensors: Compact internal switches, reed relays, and hardware assemblies. [1, 2, 3]