The strongest neodymium grade available
Grade N52 represents the maximum strength of commercially available sintered neodymium.
It offers the highest magnetic energy product (BHmax) of any permanent magnet material – approximately 50-52 MGOe.
Maximum strength, minimum size
We manufacture custom N52 blocks for high-performance applications where size reduction is critical.
N52 allows you to achieve the necessary holding force with the smallest possible physical footprint.
Ideal for space-constrained designs
Some product designs have strictly limited volume.
Examples can be inside a smartwatch, micro-robot, or medical device.
N52 delivers the strength you need without compromising your form factor.
The Engineering Logic: Why Pay for N52?
N52 carries a price premium.
Here is when it is the mandatory engineering choice:
1. Extreme Miniaturization (Weight & Space Reduction):
The Challenge:
– You are designing a drone, a wearable device, or a hearing aid.
– Every gram and every millimeter matters.
The Solution:
– An N52 block can generate the same pull force as an N35 block that is 40-50% larger.
– This allows you to shrink your housing, reduce device weight, and optimize your entire assembly.
2. Bridging the “Air Gap”:
The Challenge:
– Your magnet must be hidden behind a thick surface (e.g., 3mm of wood or leather) for aesthetic reasons.
The Solution:
– Standard grades lose their grip rapidly over distance.
– The intense flux density of N52 allows the magnetic field to “punch through” non-magnetic barriers and maintain a secure latch.
3. “Fake Grade” Protection:
The Risk:
– The market is flooded with “N52” magnets that are actually N45 or N48.
Our Guarantee:
– We provide Certified N52 material.
– We can supply a Demagnetization Curve (BH Curve) with your batch proving a Remanence (Br) of 14.3 – 14.8 kGs.
– We sell true power, not just a label.
Technical Advisory: The Heat Trade-Off
As experts, we must warn you about the physics of N52.
Operating Temperature:
Standard N52 is hyper-optimized for room temperature strength.
Max Temp: 60°C – 80°C (140°F – 176°F).
The Warning:
If your application involves heat (e.g., near a battery, motor, or processor), standard N52 will lose strength permanently.
The Alternative:
If you need high heat and high strength, ask us about N50M or N48H. Do not use standard N52 in hot environments.
Manufacturing Capabilities
N52 raw material is expensive, precision manufacturing is essential to avoid waste.
– Precision Slicing: We use fine-wire slicing technology to produce blocks with minimal kerf loss.
– Tolerances: Standard ±0.05mm. Precision ±0.02mm available for interference fits.
– Complex Geometries: We can produce stepped blocks, wedges, or chamfered blocks in N52 using Wire EDM.
Ideal Applications
Aerospace & Drones: Motor magnets and latches where weight reduction is the #1 priority.
Medical Devices: Implantable devices or surgical tools requiring strong magnetic coupling in micro-housings.
High-End Audio: Drivers for In-Ear Monitors (IEMs) requiring maximum flux density.
Robotics: End-of-arm tooling and grippers.
Luxury “Invisible” Latches: Closures buried deep inside thick leather or wood.
Ordering Guide: Precision Quotation
To get an accurate quote for N52, please define:
1). Dimensions: Length x Width x Thickness.
2). Certification: “Do you require a BH Curve report with the shipment?”
3). Temperature Environment: “What is the maximum temp this magnet will reach?” (Crucial for N52).
4). Quantity: N52 is often produced in specific batches; lead times may vary slightly compared to N35.
