Injection Molded Magnets

Injection molded magnets are manufactured by mixing magnetic powder with a thermoplastic binder, followed by granulation, injection molding, cooling, and magnetization.

Injection molded magnets are available in a range of grades with different magnetic characteristics. In practical applications, their magnetic performance is mainly influenced by the magnetic powder system, powder loading, and molding conditions.

Injection molded magnets need to be magnetized before they can be used in their final applications. Since they are typically based on isotropic magnetic powder, they may be magnetized in different directions after molding according to the needs of the final design.

In practical applications, the achievable magnetization pattern still depends on factors such as magnet shape, dimensional limitations, and magnetizing fixture design. For this reason, magnetization direction should be considered together with shape and assembly requirements during product development.

Choosing the right injection molded magnet depends on several factors, including the required magnetic performance, shape complexity, dimensional requirements, magnetization direction, and cost target. In many cases, injection molded magnets are worth considering when the application requires complex geometries, integrated molding, or high-volume production.

They are especially suitable for designs that require tight tolerances, flexible magnetization directions, and multiple functional features in a single molded part. At the same time, their lower powder loading and lower magnetic properties should also be considered during material selection.

If you need help determining whether injection molded magnets are more suitable than compression molded or sintered magnets for your project, feel free to contact us for technical support and product recommendations.