Neodymium Magnet Grades Chart - Complete NdFeB Specifications (N35 to AH Series) | Xilai Tech

Neodymium Magnet Grades (NdFeB) Specifications Table

Grade	Br (kGs)	HcB (kOe)	HcJ (kOe)	BH<sub>max</sub> (MGOe)	Max Operating Temp.	Typical Applications
N35	11.7-12.1	≥10.8	≥12	33-35	80 °C	Speaker, Toys, Sensors
N38	12.2-12.6	≥11.4	≥12	38-40	80 °C	Consumer Electronics, Magnetic Tolls
N40	12.7-13.1	≥11.6	≥12	40-42	80 °C	Small Motors, Medical Devices
N42	13.2-13.6	≥12.0	≥12	42-44	80 °C	Industrial Motors, Wind Turbines
N45	13.7-14.1	≥12.5	≥12	45-47	80 °C	EV Drivetrains, Robotics
N48	14.2-14.6	≥13.0	≥12	48-50	80 °C	Aerospace, High-End Sensors
N50	14.7-14.9	≥13.5	≥12	50-52	60 °C	Audiophile Equipment, Magnetic Levitation
N52	≥14.8	≥14.0	≥12	52-54	60 °C	Laboratory Instruments, Precision Systems
35M	11.7-12.1	≥11.0	≥14	33-35	100 °C	Automotives Sensors, HVAC Systems
35H	11.7-12.1	≥12.0	≥17	33-35	120 °C	Industrial Actuators, Power Tools
30SH	11.0-11.4	≥13.0	≥20	28-30	150 °C	Oil & Gas Equipment, High-Temperature Motors
28UH	10.8-11.2	≥14.0	≥25	26-28	180 °C	Defense Systems, Space Applications
25EH	10.5-10.9	≥15.0	≥30	24-26	200 °C	Extreme Environment Machinery
20AH	10.0-10.4	≥16.0	≥35	20-22	220 °C	Specialized Industrial & Military Uses

Key Parameters Explained

1. Br (Remanence):

Magnetic flux density retained after magnetization. Higher Br = stronger magnetic force.

2. HcB (Coercivity):

Resistance to demagnetization by external fields. Critical for stability.

3. HcJ (Intrinsic Coercivity):

Resistance to demagnetization under high temperatures or reverse fields.

4. BH<sub>max</sub> (Energy Product):

Overall magnetic energy density. Determines magnet efficiency.

Customization Options

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