Neodymium Magnet Grades Explained – From N35 to N52

Understanding Neodymium Magnet Grades: N35, N45, N52 & More

Neodymium magnets are known for their incredible strength in a compact size. But not all neodymium magnets are created equal. You’ve probably seen grades like N35, N45, N52—but what do these actually mean? In this article, we’ll break down the grading system, compare the strength differences, and show real-world examples of holding force by size.

What Do Neodymium Magnet Grades Mean?

The “N” in N35, N45, or N52 stands for neodymium, while the number indicates the maximum energy product of the magnet, measured in Mega-Gauss Oersteds (MGOe). In simple terms:
The higher the number, the stronger the magnetic field.

• N35: Entry-level strength
• N45: Mid-range, more powerful than N35
• N52: Among the strongest grades available for commercial use

💡 Example: An N52 magnet of the same size as an N35 magnet can have up to 50% more holding force.

Sample Holding Forces by Grade and Size

Below are some estimated holding forces of common disc-shaped neodymium magnets (assuming ideal conditions and full surface contact on a steel plate):

Note: Actual pull force may vary depending on surface material, direction of pull, air gaps, and temperature.

When to Choose a Higher Grade Magnet

Choosing a stronger grade (like N52) is ideal when:

• Space is limited and maximum force is needed
• You require secure mounting without increasing magnet size
• Applications involve sensors, precision tools, or scientific use

However, higher-grade magnets are also more brittle and slightly more expensive, so they are not always the best fit for everyday projects or educational use.

Summary: Grade Selection Tips

Need Help Choosing the Right Magnet?

At yourmagnets.net, we stock a wide range of neodymium magnets in various grades, sizes, and shapes. If you’re unsure which strength suits your project best, feel free to contact us – we’re happy to help!