Technical Data
N38 Technical Specifications
| Parameter | Value |
|---|---|
| Remanence (Br) | 12.2–12.6 kGs (1.22–1.26 T) |
| Coercive Force (HcB) | ≥11.3 kOe (≥899 kA/m) |
| Intrinsic Coercivity (HcJ) | ≥12 kOe (≥955 kA/m) |
| Energy Product (BHmax) | 36–39 MGOe (287–310 kJ/m³) |
| Max Operating Temperature | 80°C |
| Temperature Coefficient (Br) | -0.12 %/°C |
| Temperature Coefficient (HcJ) | -0.60 %/°C |
| Density (typical) | 7.5 g/cm³ |
| Vickers Hardness (typical) | 550–650 HV |
Values per IEC 60404-5 / GB/T 13560. Actual production values fall within the range quoted; batch-specific BH-curve data is provided on every certificate of conformance.
Overview
What Is N38?
N38 balances BHmax and cost more favourably than N35 and is a common default when a specifier does not have a strong reason to reach for a higher grade. It suits loudspeakers, sensors, small DC motors, and general industrial fixtures where the operating temperature is controlled.
Applications
Where N38 Is Used
N38 is specified across the following application categories. Each links to a full application brief with design requirements and recommended grade combinations.
Surface Protection
Recommended Coatings for N38
Coating choice is driven by operating environment and assembly method. For N38, the typical options are:
See our NdFeB Coatings Guide for a full comparison with salt spray data and decision framework.
Specifying
Design Considerations When Specifying N38
Key insight
Default grade for price-driven assemblies, step up to N42 when an extra 10% flux is worth the premium.
FAQ
Frequently Asked Questions
What is N38 NdFeB magnet?
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N38 balances BHmax and cost more favourably than N35 and is a common default when a specifier does not have a strong reason to reach for a higher grade. It suits loudspeakers, sensors, small DC motors, and general industrial fixtures where the operating temperature is controlled.
What is the maximum operating temperature of N38?
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N38 sintered NdFeB is rated for continuous operation up to 80°C. This is the practical upper limit before thermal demagnetization begins to affect performance. For a safety margin, design for a working temperature at least 20–30°C below the maximum rating.
What is the BHmax of N38?
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N38 delivers an energy product (BHmax) in the range of 36–39 MGOe (287–310 kJ/m³). This is the maximum magnetic energy density the grade can produce, measured according to standard IEC 60404-5 magnetic testing.
What applications use N38 magnets?
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N38 is typically specified for Industrial Automation. The grade's combination of 36–39 MGOe (287–310 kJ/m³) energy product and 80°C maximum service temperature determines its fit for any given motor or actuator design.
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