Guide to N35 Neodymium Magnets Properties and Applications

Imagine a coin-sized magnet capable of lifting several kilograms with ease. This isn't science fiction but the reality of N35 neodymium magnets. As one of the most widely used permanent magnet materials, what makes N35 magnets special? How do they compare to other grades like N50 or N52? This article provides a detailed analysis of N35 magnet properties, applications, and comparative performance.

Neodymium magnets, also known as NdFeB magnets, represent the strongest class of permanent magnets commercially available today. These sintered magnets consist primarily of neodymium, iron, and boron. The "N35" designation indicates both the material type (the "N" for neodymium) and its maximum energy product (the "35" representing (BH)max), which serves as a key performance metric—higher values indicate stronger magnetic properties.

The complete technical specifications for N35 magnets include:

• Remanence (Br): Measures residual magnetic flux density after magnetization. N35 magnets typically maintain 11.7-12.1 kG (1.17-1.21 T), with higher values indicating stronger magnetic fields.
• Coercivity (Hc): Indicates resistance to demagnetization, typically 10.8-11.2 kOe (860-890 kA/m) for N35 magnets.
• Intrinsic Coercivity (Hcj): Accounts for internal demagnetization effects, usually exceeding standard coercivity values.
• Maximum Energy Product (BH)max: Represents energy density, ranging 33-36 MGOe (263-286 kJ/m³) for N35 magnets.
• Maximum Operating Temperature: Approximately 80°C (176°F), beyond which permanent performance degradation may occur.

While N35 defines material grade, actual lifting capacity depends on physical dimensions and geometry. Manufacturers produce N35 magnets in various configurations—discs, blocks, rings, and arc segments—each exhibiting different magnetic flux distributions. Precise force measurements require evaluation of specific designs.

N35 magnets deliver optimal balance between performance and affordability across multiple industries:

• Data Storage: Hard disk drives and other digital storage media
• Magnetic Fasteners: Luggage, jewelry, and apparel closures
• Creative Projects: Display systems, educational tools, and DIY applications
• Electromechanical Systems: Small motors, generators, and position sensors

The following tables illustrate key differences between N35 and premium-grade alternatives:

Optimal magnet selection requires evaluating multiple factors:

• Application Requirements: Consider precision needs, environmental conditions, and budget constraints
• Magnetic Strength: Higher grades (N50/N52) deliver stronger fields but at increased cost
• Thermal Stability: Verify operating temperatures won't exceed material limits
• Physical Configuration: Dimensions and geometry significantly affect performance

N35 magnets remain a preferred solution for applications demanding reliable performance at moderate cost. Understanding these specifications enables informed material selection for diverse technical requirements.