Neomet Tech

菜单
Get a Quote

NdFeB Magnets Specifications, Grades, Magnetization & Custom Engineering

Learn how different materials, magnetization patterns, coatings, and tolerance controls impact your application—backed by our global engineering experience and China’s manufacturing capabilities.

NdFeB TEMPERATURE COEFFICIENT MAP
Selection ranges of αBr and βHcj for different series

We also offer comprehensive coating options — tailored to your operating environment.

Achieve stronger pull force with optimized magnetic circuit design.

Ideal for applications requiring high efficiency and reduced material cost.

NdFeB Magnet Performance Table

Filter by Series ? Series (by letter suffix)
• N Standard temperature, typical max. operating temp ~80 °C.
• M Medium temperature, up to ~100 °C.
• H / SH High-temperature grades, typically 120–150 °C.
• UH / EH / TH Ultra high-temperature grades, typically 180–230 °C and above.

Tip: Click column headers to sort. , or search by grade/keyword.
Grade Series Br [T] Br [kGs] HcJ [kA/m] HcJ [kOe] HcB [kA/m] HcB [kOe] (BH)max [kJ/m³] Max Operating Temp [°C] α(Br) [%/°C] β(HcJ) [%/°C]
Tip: From N to TH (N → M → H → SH → UH → EH → TH), the maximum operating temperature increases and the temperature coefficients become smaller in magnitude, giving better magnetic stability at higher temperatures.

Other Material Properties

(reference values)

Other Material Properties
Parameter Unit Reference Value Parameter Unit Reference Value
Curie Temperature °C 310 ~ 400 Thermal Conductivity W/m·°C 8 ~ 10
Density g/cm³ 7.4 ~ 7.7 Young’s Modulus GPa 150 ~ 200
Vickers Hardness HV 500 ~ 700 Electrical Resistivity C∥   μΩ·m 1.4 ~ 1.6
Recoil Permeability — 1.02 ~ 1.08 C⊥   μΩ·m 1.2 ~ 1.4
Compressive Strength MPa 1000 ~ 1100 Coefficient of Thermal Expansion C∥   10⁻⁶/°C 4 ~ 9
Flexural Strength MPa 150 ~ 400 C⊥   10⁻⁶/°C −2 ~ 0
Note: C∥ represents values measured parallel to the easy magnetization direction; C⊥ represents values measured perpendicular to the easy magnetization direction.

B-H Curve

Our NdFeB Products by Automatic Hysteresisgraph AMT-4

  • Material Type: NdFeB

  • Grade: N35

  • Sample Shape: Column

  • Size (mm): Diameter = 23.12

  • Sample Temperature: 22°C

  • μrec: 1.087

Magnetic Properties – N35

Br1.216 T12.16 kGs
Hcb890 kA/m11.19 kOe
Hcj999 kA/m12.56 kOe
(BH)max267.60 kJ/m³33.63 MGOe
Hk962 kA/m12.08 kOe
Hd446 kA/m5.60 kOe
Bd0.601 T6.01 kGs
Hd5598 kA/m7.51 kOe
Hk/Hcj Ratio96.2%
(BH)max-Pc1.07

  • Material Type: NdFeB

  • Grade: 38SH

  • Sample Shape: Square

  • Size (mm): L 62.19 × W 35.60

  • Sample Temperature: 20°C

  • μrec: 1.028

Magnetic Properties – 38 HS

Br1.251 T12.51 kGs
Hcb969 kA/m12.18 kOe
Hcj1614 kA/m20.28 kOe
(BH)max303.35 kJ/m³38.12 MGOe
Hk1574 kA/m19.79 kOe
Hd488 kA/m6.13 kOe
Bd0.622 T6.22 kGs
Hd51402 kA/m17.61 kOe
Hk/Hcj Ratio97.6%
(BH)max-Pc1.01

  • Material Type: NdFeB

  • Grade: N52

  • Size (mm): L 50.87 × W 35.80

  • Sample Temperature: 20°C

  • μrec: 1.139

Magnetic Properties – N52

Br 1.445 T 14.45 kGs
Hcb 1009 kA/m 12.68 kOe
Hcj 1033 kA/m 12.99 kOe
(BH)max 409.32 kJ/m³ 51.44 MGOe
Hk 1010 kA/m 12.69 kOe
Hd 564 kA/m 7.09 kOe
Bd 0.726 T 7.26 kGs
Hd5 1002 kA/m 12.59 kOe
Hk/Hcj Ratio 97.7%
(BH)max-Pc 1.02

Produts Shapes

We offer shapes customization: block, ring, disc, arc...

Not your ideal pattern? ​

Tell us your magnet requirements — our engineers will respond within 24 hours

    Your Name (Required)

    Email (Required)

    Country (Required)

    Phone / WhatsApp

    Company (Required)

    Project / Application (Required)

    Project Stage


    Upload Drawings or Specifications (Optional)

    Max file size: 10MB. PDF, CAD, image files supported.

    Technical Requirements (Required)

    FAQs

    A selection of our precision sintered NdFeB magnets in various applications.

    Can magnets be manufactured in irregular shapes?

    Yes. Custom magnets can be manufactured in a wide range of complex shapes, including arc, segment, stepped, and perforated designs.

    Specialized equipment such as 5-axis CNC machines, EDM, and custom fixtures is used to achieve accurate machining.

    The manufacturing process is adjusted based on shape complexity to ensure the magnets do not crack, maintain precise dimensions, and meet specific design requirements.

    Yes. Custom magnets can be supplied with multipole magnetization to support applications requiring complex magnetic fields.

    Alternating N/S poles (such as 4, 8, 16 poles or more) are created using custom-designed magnetizing fixtures based on pole count, pole pitch, and magnet geometry.

    High-precision magnetizing equipment ensures uniform magnetic strength and accurate pole positioning.

    Multipole magnets are widely used in precision motors, sensors, and magnetic encoders, where they help improve control accuracy and overall system performance.

    Yes. We can customize the magnetization direction to meet specific application requirements.

    Common options include axial, radial, and multipole magnetization.

    Specialized magnetizing equipment and fixtures ensure correct N/S pole orientation and a consistent magnetic field direction.

    Customized magnetization allows better integration with surrounding components and improves performance in applications such as motors and sensors.

    With Our professional testing equipment, standardized inspection procedures and QC personnel to ensure product quality and consistency.
     
    Quality inspection covers all stages:
    •Incoming raw material inspection
    •In-process inspection at critical manufacturing steps
    •Final inspection before shipment
     
    Any non-conforming products are immediately reported and productivly handled according to corrective-action procedures.
    so customers consistently receive compliant products.
    Yes. Small-batch or prototype production is supported and is strongly recommended before large-scale production.
     
    Small-batch trials allow our customers to validate magnetic performance in real operating conditions, check mechanical fit and assembly compatibility and Identify potential design or process optimizations
     
    If adjustments are needed, production parameters or designs can be refined before mass production.
    This approach significantly reduces project risk and ensures that large-scale production fully meets expectations.

    For standard magnet grades that do not involve regulated elements, shipment can be arranged quickly after routine inspection.

    However, due to government regulations related to certain rare earth materials, some magnet grades may require additional approval, which can result in a longer lead time.

    Please contact us with your specific grade and application requirements, so we can provide an estimated shipping timeline.

    Power your project with precision magnet solutions.

    Contact →