N42UH Grade Magnets [Properties Application Curve]

N42UH is one of the grades of neodymium permanent magnet materials, characterized by high magnetic energy product and excellent high-temperature performance. It is commonly used in applications that require high magnetic strength and temperature stability. The following provides an overview of the key performance parameters, typical applications, BH curve (magnetic performance curve), and the relationship between magnetic flux irreversible loss (typical value) and temperature for N42UH grade magnets.

Basic performance parameters of neodymium iron boron magnet grade N42UH

Residual magnetism (residual magnetic induction): 1.30 – 1.38 T

Coercive force (magnetic coercive force): ≥ 905 kA/m

Intrinsic coercive force (HCJ): ≥1592 kA/m

Maximum magnetic energy product (BH)max: 40 – 43 MGOe

Operating temperature range: ≤180°C

Specific values may vary slightly depending on manufacturing processes and dimensions.

N42UH Processing

Magnetization direction: mainly axial and radial

Surface treatment: nickel plating, zinc plating, gold plating, epoxy plating

Tolerance: generally ±0.05mm, stricter tolerances can be customized

Shape: both ordinary and special shapes can be processed, You can take a look at: Different shapes of magnets and their uses

Certification: ROHS, MSDS, REACH, etc.

Typical applications of N42UH magnets

High-performance motors (especially electric vehicle drive motors and servo motors)

Generators in high-temperature environments

Oil and gas exploration equipment (downhole tools)

Aerospace components

High-temperature sensors and actuators

Wind turbines (some components)

N42UH Grade BH Curve Image

Relationship between irreversible flux loss (typical value) of 42UH products at different operating points and temperature

The above is an introduction to N42UH. Under the same specifications, its magnetic properties are similar to those of N42, but its temperature resistance is much stronger. The choice between the two mainly depends on the working environment.

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