Metal injection moulding (MIM) is a manufacturing process in which metal powder is mixed and kneaded with a polymer binder. The mixture is called feedstock. Then the feedstock is injected into a mould to form the desired metal components structure.

Characteristics of Metal Injection Moulding (MIM)

Materials

Metal injection moulding allows the use of a wide range of materials, including high melting point alloys and metals that are difficult to machine.
Using ultra-fine powder achieves a smooth surface finish, reducing the need for additional polishing or machining processes.
This flexibility makes metal injection moulding ideal for components requiring both strength and precision.

Shape

With metal injection moulding, it is possible to integrate multiple parts into a single, complex design.
Any near-net shape can be produced, with no limitations on side holes, undercuts, or fine lettering.
Excellent pattern reproduction and thin-wall structures can also be achieved through precise moulding control.

Forming

The metal injection moulding process excels in the mass production of complex, three-dimensional components with exceptional dimensional accuracy.
It is often used as a substitute for machining or investment (lost-wax) casting, offering higher productivity and cost efficiency.

Merits of Metal Injection Moulding (MIM)

Metal injection moulding provides high geometric accuracy and consistent quality thanks to its precise moulding and sintering process.
Components typically reach a relative density of 98% or higher, ensuring excellent mechanical properties comparable to wrought materials.
Surface treatments such as plating or coating can be easily applied, allowing further enhancement of appearance and durability.
Overall, metal injection moulding (MIM) offers an ideal solution for manufacturers seeking miniaturisation, cost reduction, and superior part quality.

Manufacturing Process

List of available materials