What Is N50H?
N50H is close to the theoretical limit of combining 47+ MGOe with 120°C service. It is used selectively in competition drone motors, specialist servos, and research instruments. Production is limited to a small number of qualified factories worldwide.
N50H Technical Specifications
| Remanence (Br) | 14.0–14.4 kGs (1.40–1.44 T) |
| Coercive Force (HcB) | ≥12.5 kOe (≥995 kA/m) |
| Intrinsic Coercivity (HcJ) | ≥17 kOe (≥1353 kA/m) |
| Energy Product (BHmax) | 47–50 MGOe (374–398 kJ/m³) |
| Max Operating Temperature | 120°C |
| Temperature Coefficient (Br) | -0.12 %/°C |
| Temperature Coefficient (HcJ) | -0.55 %/°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.
Where N50H Is Used
N50H is specified across the following application categories. Each links to a full application brief with design requirements and recommended grade combinations.
Aerospace & Defense
High-temperature NdFeB magnets for aerospace actuators, flight-control servos, defense systems, and downhole tools — with the documentation, export licensing, and material verification these programs demand.
Industrial Automation
NdFeB magnets for stepper motors, servo drives, linear actuators, magnetic couplings, and factory automation equipment across European and North American manufacturing.
Recommended Coatings for N50H
Coating choice is driven by operating environment and assembly method. For N50H, the typical options are:
- •NiCuNi
- •Epoxy over NiCuNi
See our NdFeB Coatings Guide for a full comparison with salt spray data and decision framework.
Design Considerations When Specifying N50H
- 01Premium pricing and lead time — not a grade to spec lightly.
- 02GBD processing is essentially required for competitive cost at this HcJ/BHmax combination.
- 03Verify supplier capability with recent batch data before committing to production volumes.
Related Grades
↑ Higher temperature rating
N48SH (150°C)
↓ Lower temperature, lower cost
N50 (65°C)
Same family · High Temperature (H)
N38H · 36–39 MGOe (287–310 kJ/m³)
Same family · High Temperature (H)
N42H · 40–43 MGOe (318–342 kJ/m³)
Same family · High Temperature (H)
N45H · 43–46 MGOe (342–366 kJ/m³)
Same family · High Temperature (H)
N48H · 45–48 MGOe (358–382 kJ/m³)
Frequently Asked Questions
What is N50H NdFeB magnet?
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N50H is close to the theoretical limit of combining 47+ MGOe with 120°C service. It is used selectively in competition drone motors, specialist servos, and research instruments. Production is limited to a small number of qualified factories worldwide.
What is the maximum operating temperature of N50H?
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N50H sintered NdFeB is rated for continuous operation up to 120°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 N50H?
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N50H delivers an energy product (BHmax) in the range of 47–50 MGOe (374–398 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 N50H magnets?
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N50H is typically specified for Aerospace & Defense, Industrial Automation. The grade's combination of 47–50 MGOe (374–398 kJ/m³) energy product and 120°C maximum service temperature determines its fit for any given motor or actuator design.
Request a Quote for N50H Magnets
Factory-direct supply from Mainrich International. IATF 16949 certified, EU-office support from London, 97% on-time delivery. Share your dimensions, quantity, and target application — we will quote within two business days.