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Metal Injection Molding

Metal Injection Molding (MIM) – Precision and Innovation in Manufacturing

Metal Injection Molding (MIM) combines the versatility of plastic injection molding with the mechanical properties of metal. This process allows for the production of complex and precise components in large quantities with minimal material waste. Schunk is a leader in the development and application of this technology.

Diverse Applications

We are the MIM expert for all industries

Metal injection molding can be the best manufacturing process for you when you need complex three-dimensional components. Whether high temperatures or creep resistance are your challenges, we use our extensive material expertise to equip your component with the appropriate properties for your application – ensuring reliable and long-term performance. Challenge us – together, we will develop the best solution for your business.

 

Power Electronics

The mechanical and electrical, properties of MIM products make them excellent for use in power electronics. Schunk offers a wide range of materials for power electronics, from pure copper, resistance alloys, to hardenable copper alloys. Highly complex component geometries such as terminals (connectors), shunts, heat exchangers, and circuit boards can be combined with the required electrical and thermal properties of copper materials.

Medical Technology

Where high-precision instruments and systems for diagnostic and therapeutic applications are developed, the metal injection molding process shows its strengths. Applications range from sophisticated components for medical devices, spacers, and individual parts for surgical pliers to braces brackets. If you are looking for a development partner to drive innovation in medical technology with you, contact us.

Consumer Sector

Environmentally conscious consumers value innovative products, high quality, and sustainable production. The MIM process can score threefold here, enhancing your competitiveness. Whether components for the watch industry or smartwatches, for razors, nail files, handbags, binoculars, or digital cameras – the application possibilities for metal injection molding components are limitless.

Aerospace

Did you know that our components were the first safety-relevant MIM parts ever used in aviation? Schunk's MIM components are used in aircraft engines, where they excel due to their high heat resistance and lightweight properties. Our customers benefit from the high reproducibility of the components, reducing manufacturing costs.

 

Automotive

As a long-standing partner of the automotive industry, we manufacture customized components for e-mobility. With injection-molded connector housings, copper components, shunts, shielding housings, parts for window lifters, gears, and other wear-resistant and heat-resistant components, we ensure greater safety and comfort in electric vehicles.

Defense

We are your experienced development partner when it comes to MIM components that function perfectly even under extreme conditions. Our precision components for the defense sector meet the industry's high quality and safety standards and ensure the reliability of defense systems.

Material Table
Material Table

Schunk Meco Material Table

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Materials in comparison

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Why choose Metal Injection Molding?

  • Complex Geometries: Create components with complex shapes that are not possible with traditional metalworking.
  • High Precision: Guarantees tight tolerances and excellent surface quality.
  • Material Variety: Processes a wide range of metals, including steel, stainless steel, copper, and special alloys.
  • Cost Efficiency: Reduces material waste and production costs through automated mass production.
  • Environmental Friendliness: A sustainable process through efficient material use and reduced energy consumption.
  • High Material Density: End densities of 96 % to 100 % for maximum strength.
  • Recyclability: 100 % of the metal raw material is used.

Benefit from

  • Reproducibility even in very large quantities.

  • Ready-to-install components at low unit costs.
  • Material utilization 96 % - 100 %.
  • Components in all refinement stages.
  • Environmental friendliness through high material and energy efficiency.
  • Recyclability.
  • Lean, stable processes (LeanSigma).
  • Tight tolerances even with complex geometries.
  • Weight savings compared to parts from other manufacturing processes.
Process

Process of Metal Injection Molding

Metal Powder

In addition to traditional MIM materials with iron as a base and nickel and carbon as alloying elements, we also process stainless and acid-resistant steels, nickel-based alloys, and other high-temperature-resistant materials. We also offer materials with properties significantly superior to conventional materials, such as highly wear-resistant, high-heat-resistant, and soft-magnetic materials.

Mixing

Typical of the MIM technique is mixing fine metal powders with organic binders to form a homogeneous mass, with the volume content of the metal powder being 50 % - 70 %. This homogeneous mass can be processed in injection molding machines similar to plastic processing.

Injection Molding

In the injection molding process – we have machines with clamping forces ranging from 500 - 2,000 kN – the mixture is injected into molds to form components that exhibit all the typical geometric features of the final part. These so-called "green parts" still contain the binder component.

Debinding

The removal of organic binders is done using our self-developed debinding processes. The binders are completely removed from the components through solvent extraction.

Sintering

The porous shapes remaining after debinding are densified and solidified by sintering under various protective gases or in a vacuum to form components with exact geometric properties. The linear shrinkage results in final densities of 96 % to 100 %.

Processing & Refining

In subsequent finishing processes, all conceivable heat and surface treatments, as are typical for conventionally manufactured components, can be applied. Schunk Mobility's machining competencies go beyond common finishing steps. We decide individually with you which refinement is the best technological and economic option for your component.

2C-MIM

One component, two properties: Two-component metal injection molding

With the two-component metal injection molding (2C-MIM) process, different material properties can be combined in a single component. This allows the production of parts with optimal properties for specific applications – all in a single production step without additional joining processes or surface treatments. A typical application example is the automotive industry, where components are needed that require both high wear resistance and good weldability.

Advantages

  • Powerful Components: Higher strength and functionality by combining different materials.
  • Shorter Process Chain: Reduces production times and costs.
  • High Precision: Seamless transition zones with a homogeneous microstructure and high accuracy.
  • Versatility: Ideal for complex components that demand high performance in different properties.
Brochure: Metal Injection Molding
Brochure: Metal Injection Molding

More freedom for your design

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Flyer: Metal Injection Molding for Aerospace
Flyer: Metal Injection Molding for Aerospace

High temperature applications for
aerospace with metal injection molding

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Flyer: Metal Injection Molded Parts made of Copper-based Materials
Flyer: Metal Injection Molded Parts made of Copper-based Materials

Imagine the possibilities

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Flyer: Metal Powder Injection Molding Components for Turbochargers
Flyer: Metal Powder Injection Molding Components for Turbochargers

Precise components for the
highest requirements

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Flyer: Two-Component Metal Injection Molding
Flyer: Two-Component Metal Injection Molding

One process for combining the best properties

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Downloads

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Why Schunk?

Why you should choose Schunk

  • All from one source: From machining to coating to ready-to-install parts.
  • Certified Quality: High-quality MIM components that meet international quality standards (EN 9100 | IATF 16949 | ISO 9001 | ISO 14001 | ISO 50001).
  • Experience and Service: 30 years of experience and excellent support for technically complex components.
  • Material Expertise: A wide range of materials for high-performance components.
 Portrait of Thorsten Klein, Head of SBA Metal Injection Molding at Schunk
MIM explained
MIM explained

Design like plastic with metal properties

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2C-MIM
2C-MIM

Schunk is the only manufacturer worldwide to offer 2C-MIM technology in series production. This technology allows different materials to be combined in a single process step, fitting together perfectly.

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Expert Interview: Tobias Heusel
Expert Interview: Tobias Heusel

Two Component Metal Injection Molding

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Videos

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