1/2" x 3/8" N52 Neodymium Disc Magnets – Strong Rare Earth Magnets
Quick Facts
| Attribute |
Value |
| Magnet Type |
Neodymium Rare Earth Disc Magnet |
| Grade |
N52 |
| Shape |
Disc |
| Diameter |
1/2" (12.7 mm) |
| Thickness |
3/8" (0.375" / 9.53 mm) |
| Pull Force |
Approximately 22 lbs |
| Material |
NdFeB (Neodymium-Iron-Boron) |
| Coating |
Nickel-Copper-Nickel (Ni-Cu-Ni) Triple Layer |
| Magnetization |
Through Thickness |
| Br Max |
14,800 Gauss |
| Certification |
ISO Certified |
Quick Answers
| Question |
Answer |
| How strong is this magnet? |
Approximately 22 lbs of pull force under ideal conditions. |
| What is this magnet made of? |
NdFeB (Neodymium-Iron-Boron) rare earth material. |
| Is N52 stronger than N42 magnets? |
Yes. N52 is the highest commercially available neodymium grade and provides greater magnetic strength than N50, N48, N45, N42, N40, N38, and N35 magnets. |
| Can it be used outdoors? |
Yes, but additional sealing is recommended for long-term outdoor or humid environments. |
| What is it commonly used for? |
Manufacturing, engineering, robotics, woodworking, magnetic fixtures, product assemblies, and high-performance DIY projects. |
Product Overview
These 1/2" x 3/8" N52 Neodymium Disc Magnets deliver exceptional holding power in a compact, heavy-duty design. The 1/2-inch diameter provides excellent contact with steel surfaces, while the thick 3/8-inch profile creates a deeper magnetic field and substantially greater holding strength than thinner disc magnets.
Manufactured from premium N52 grade NdFeB (Neodymium-Iron-Boron), these magnets offer the highest commercially available magnetic strength for demanding industrial, commercial, and engineering applications. Whether you're building magnetic fixtures, product assemblies, woodworking projects, robotics, or custom equipment, these magnets provide reliable, consistent performance.
Each magnet is protected with a durable Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating, providing excellent resistance to corrosion, scratches, and chipping while maintaining a smooth, polished finish.
What Is a Neodymium Disc Magnet?
A neodymium disc magnet is a permanent magnet manufactured from NdFeB (Neodymium-Iron-Boron), the strongest commercially available magnetic material. Neodymium magnets provide exceptional magnetic force while remaining compact, making them ideal for applications where maximum strength is required in a limited space.
Disc magnets are among the most versatile magnet shapes and are commonly used in manufacturing, robotics, woodworking, electronics, magnetic closures, sensors, fixtures, product assemblies, and countless DIY projects.
Neodymium magnets are also known as Neo magnets, NdFeB magnets, NIB magnets, or super magnets.
How Strong Is This Magnet?
This 1/2" x 3/8" N52 disc magnet produces approximately 22 pounds of pull force under ideal laboratory conditions using a thick, clean steel surface.
Actual holding force may vary depending on several factors, including:
- Surface material
- Steel thickness
- Contact area
- Air gap
- Mounting method
- Environmental conditions
For maximum holding power, use this magnet against a clean, flat, thick steel surface.
Note: Pull force values are estimates based on ideal testing conditions. Actual performance should always be verified for your specific application.
Technical Specifications
| Specification |
Value |
| Magnet Type |
Neodymium Rare Earth Disc Magnet |
| Grade |
N52 |
| Shape |
Disc |
| Diameter |
1/2" (12.7 mm) |
| Thickness |
3/8" (0.375" / 9.53 mm) |
| Material |
NdFeB (Neodymium-Iron-Boron) |
| Coating |
Nickel-Copper-Nickel Triple Layer |
| Magnetization |
Through Thickness |
| Pull Force |
Approximately 22 lbs |
| Br Max |
14,800 Gauss |
| Certification |
ISO Certified |
Nickel-Copper-Nickel Triple-Layer Coating
Every magnet features a Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating that provides superior durability and corrosion resistance.
Benefits
- Excellent scratch resistance
- Superior resistance to chipping and cracking
- Outstanding corrosion protection
- Smooth, polished metallic finish
- Long-lasting durability for industrial and commercial applications
Magnet Grade Comparison
| Grade |
Relative Strength |
Typical Applications |
| N35 |
Standard |
General-purpose magnets |
| N38 |
Moderate |
Consumer products |
| N40 |
High |
Industrial applications |
| N42 |
Higher |
Engineering and manufacturing |
| N48 |
Very High |
Precision industrial applications |
| N50 |
Extremely High |
High-performance assemblies |
| N52 |
Maximum |
Maximum-strength industrial, engineering, and robotics applications |
N52 is the highest commercially available neodymium magnet grade, offering the greatest magnetic energy and holding power of any standard NdFeB magnet.
Disc Magnet Size Comparison
| Size |
Typical Use |
| Small |
Crafts, sensors, miniature electronics |
| Medium |
General holding, woodworking, magnetic closures |
| 1/2" x 3/8" |
Heavy-duty fixtures, product assemblies, robotics, industrial applications |
| Large |
Industrial mounting and fabrication |
Applications by Industry
| Industry |
Common Uses |
| Manufacturing |
Fixtures, jigs, magnetic assemblies |
| Engineering |
Product development and prototyping |
| Robotics |
Sensors, positioning systems, magnetic attachments |
| Electronics |
Components and magnetic assemblies |
| Woodworking |
Hidden magnetic mounts and closures |
| DIY & Makers |
Home improvement, custom builds, inventions |
Common Questions About This Magnet
Is N52 stronger than N42 magnets?
Yes. N52 provides significantly greater magnetic strength and energy than N42 magnets of the same size.
What is the pull force of this magnet?
This magnet delivers approximately 22 pounds of pull force under ideal testing conditions.
Is this magnet coated?
Yes. It features a durable Nickel-Copper-Nickel (Ni-Cu-Ni) triple-layer coating that helps protect against corrosion, oxidation, scratches, and everyday wear.
Can this magnet rust?
The protective coating significantly reduces corrosion. However, if the coating becomes damaged and the magnet is exposed to moisture for extended periods, corrosion may occur.
Can this magnet be used outdoors?
Yes. However, additional sealing is recommended for long-term outdoor or marine environments.
What direction is it magnetized?
This magnet is magnetized through its thickness, with the north and south poles located on the two flat circular faces.
Do you offer bulk discounts?
Yes. Contact Super Magnet Store for wholesale pricing and volume discounts on large quantity orders.
Why Buy From Super Magnet Store?
- Premium N52 NdFeB rare earth magnets
- ISO-certified quality
- Maximum-strength N52 grade
- Durable Nickel-Copper-Nickel triple-layer coating
- Excellent corrosion resistance
- Consistent magnetic performance
- Precision manufacturing for reliable results
- Competitive wholesale pricing
- Bulk discounts available
- Trusted by manufacturers, engineers, educators, and DIY makers worldwide
