N55 vs. N52 Magnets: When Should You Choose the Strongest Grade Available?
When it comes to choosing high-performance Neodymium magnets, most buyers are familiar with N52 — long known as one of the strongest commercially available magnet grades. But now that N55 magnets have entered the market, many ask: “Is it worth upgrading to N55? And when should I choose it over N52?”
In this blog, we’ll break down the key differences between N52 and N55 magnets, explain when N55 is the better choice, and help you avoid overpaying for strength you may not need.
What’s the Difference Between N52 and N55 Magnets?
In simple terms: An N55 magnet is about 5–6% stronger than an N52 of the same size and shape.
When Should You Choose N55 Over N52?
N55 magnets are ideal when you need maximum force in the smallest space, or when every ounce of magnetic strength matters.
You should consider N55 when:
- You're working with very limited spaceIf your design can’t accommodate a larger N52 magnet, an N55 gives more pull force in a smaller footprint.
- You’re building precision tools or sensorsEngineers or manufacturers needing tight tolerances and powerful magnetic performance benefit from N55's edge.
- You want the best performance for science or researchScientific labs and university projects may benefit from the increased field strength.
- You’re creating specialty magnetic fixtures or holdersFor example, compact magnetic knife holders or invisible closures with tight space and strength requirements.
When N52 Might Be Enough (And More Cost-Effective)
Although N55 sounds better on paper, it’s important to note:
- N55 magnets are typically more expensive
- They are more brittle and prone to chipping under stress
- Supply is limited; N52 is more commonly available in many sizes
For general use — such as woodworking, crafts, closures, tool holding, or educational projects — N52 offers excellent performance at a better value.
Real-World Example:
Let’s say you're designing a magnetic mount for a camera and only have 20mm x 5mm of space. An N52 magnet may hold up to 8.5 kg, but an N55 of the same size could hold 9 kg+ — possibly enough to make the mount feel more secure without increasing the size.