Metal Injection Molding Services | Greene Group Industries

Why Choose MIM & CIM?

Metal injection molding (MIM) and ceramic injection molding (CIM) combine the best of both worlds: the ease and design freedom of injection molding with the strength and functionality of machined parts.

Whether you’re launching a new product or improving an existing design, metal injection molding services from GGI enable you to:

Reduce unit cost while maintaining high strength and durability

Manufacture complex geometries with minimal post-processing

Achieve consistent, tight tolerances at scale

Simplify assembly with multi-feature components

These net-shape processes excel in applications where precision and reliability matter.

Quality, Supported by Consistency

Our ceramic and metal injection molding services help OEMs achieve intricate geometries, consistent quality, and production-ready performance without compromise.

Complex geometry meets high performance

Particularly well-suited to the manufacture of medical, surgical, dental, and pharmaceutical devices and instruments, metal and ceramic injection molding helps OEMs overcome the challenges of complex designs without sacrificing performance.

Exceptional repeatability across high volumes delivers predictable performance and fewer downstream adjustments
MIM and CIM can produce highly intricate shapes like thin walls, internal features, and fine details that would be difficult or impossible with traditional machining
CIM and MIM designs often require minimal secondary operations

High-Caliber Equipment

Our MIM and CIM capabilities combine cutting-edge technology with manufacturing expertise to produce complex, high-performance components with exceptional consistency.

Micro-MIM

Wall thicknesses as small as .003” over lengths of .020-.060”
Eliminates the need for post-sinter operations to achieve thin walls (gate removal, grinding, machining, EDM, etc.)
Allows for gates smaller than .012”
Part weight as low as .02 grams
Component types: electrodes, links, insulators, disks, grips, etc.

Medical MIM Manufacturer in North America

Years
in Business

Year Average Customer Partnership

M+

Annual Parts Production Capacity

1/1

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Supporting Innovation Across Critical Markets

Our integrated, U.S.-based facilities give OEMs a single source partner for complex manufacturing across regulated and performance-driven industries.

Medical Device
Defense & Aerospace
Commercial & Industrial
Electronics & Communications

How Greene Group Helps You Win

Our process isn’t just about molding components — it’s about engineering solutions that deliver measurable impact:

Material expertise across steels, soft magnetic alloys, stainless
alloys, and custom blends
Advanced tooling & quality systems to ensure first-time accuracy
Dedicated support to integrate MIM/CIM into your production strategy

Download our MIM/CIM Materials Guide

Partnership Designed to Grow with You

Our connected teams make scaling simple. We help OEMs move seamlessly from concept validation to full-scale production.

Design for Manufacture

We work alongside your engineers to refine part designs, eliminate risk, and prepare for production.

Quick-turn Prototyping

Prototypes are produced quickly and accurately, allowing you to test real parts and move forward with confidence.

Feedstock & Alloy Development

Our in-house team develops specialized metal and ceramic materials that meet your exact performance and regulatory requirements.

Process Validation

Every manufacturing process is verified and documented to ensure repeatable quality and compliance at full production scale.

Project Management

Dedicated project managers maintain open communication and proactive oversight to keep progress on track.

Program Management

Large-scale programs receive continuous coordination between engineering and production, so every detail aligns with your timeline and goals.

What Our Customers Say

“GGI has been a 5-star partner for us. After working with GGI through several projects over 6 years, I have found them to be incredibly responsive, and they have provided us with unparalleled quality on some of the most challenging MIM components. GGI has consistently developed novel ways to design their tooling to meet our demanding specifications on the latest surgical technology.”

Sr. Manufacturing Engineer,

Large Medical Device OEM

“GGI has remained a top-tier supplier long term. The highest levels of responsiveness and professionalism set them apart in support of rapidly changing requirements and extremely dynamic end customer requirements. Much of our success ties directly into these very high levels of support. Continuing thanks to GGI for all the support over all these years.”

Purchasing Manager,

Leading Equipment and Systems Manufacturer

“I wanted also to share that if I am ever asked to rank all of the vendors I have worked with according to responsiveness, achieving goals, communication, skill, and overall medical product knowledge, GGI wins, hands down. It is a pleasure seeing the project turn into a trusted process. Thanks to you both and your team!!!!”

Design Assurance Engineer,

Large Medical Device OEM

“Over the past several years GGI has worked with my project team to develop components for multiple innovative new devices. The complex nature of our designs makes these projects challenging and require a lot of personal attention, crisp communication, and creative problem-solving to meet our project targets of timing, cost, and superior quality. GGI has demonstrated their willingness and ability to deliver in these areas, making them a valued partner for our business.”

Director of Advanced Instruments

Large Medical Device OEM

“GGI’s project management support is the best of any MIM house we have worked with. We are confident when placing a new tooling PO with GGI that we are going to close the project on time. When we get into production, GGI partners with us to continually improve the process and cost over time. We ask GGI to help us compete and they are always there looking for new ways help us to advance.”

Sr. Buyer

Large Medical Device OEM

“GGI rapidly develops complex machined components and assemblies with the highest possible quality. They take on our most challenging parts right from the prototyping stages, support all development efforts and carry them through to production seamlessly. They support our development efforts as if they are part of the internal team and their level of communication is superb.

GGI has been essential to product success and bringing the highest possible quality devices to the customer. They take on real challenges and work to solve them, not only with highly precise machined parts but with a range of processes and capabilities.”

Sr. Design Engineer,

Large Medical Device OEM

Ready to Start Your Next Project?

See how our full-service contract manufacturing capabilities can elevate your precision component production and performance.

Metal Injection Molding FAQs

What is metal injection molding?

Metal injection molding (MIM) is a manufacturing process used to make complex metal components in production quantities. Fine metal powder is mixed with a binder, molded into the desired shape, then debound and sintered to form the finished metal part. It combines the design flexibility of injection molding with the properties of metal.

When is metal injection molding a good choice?

MIM is well suited to small, complex components with features that would require extensive machining or multiple parts to produce. It can be especially useful when a design needs fine details, repeatable production, and minimal secondary processing. Greene Group helps evaluate designs for MIM during its design for manufacture process.

How does metal injection molding compare with CNC machining?

CNC machining removes material to create a part, while MIM forms a near net shape using a mold. For a complex component produced at scale, MIM may reduce machining and assembly steps. CNC machining can still be useful for prototypes, lower volumes, or features that need additional finishing. The best approach depends on the part geometry, material, tolerances, and projected volume.

What metal injection molding services does Greene Group provide?

Greene Group supports projects from design for manufacture and prototyping through tooling, feedstock and alloy development, process validation, and production. Its team also provides project and program management to help OEMs bring complex components into production. Contact our sales team to learn more.

What materials can be used for metal injection molding?

Greene Group works with steels, stainless alloys, soft magnetic alloys, and custom blends. Material selection depends on the component’s mechanical, magnetic, environmental, and regulatory requirements. Its team can help evaluate an existing material or develop a specialized feedstock for the application. Contact us to learn more.

Can metal injection molding produce parts with tight tolerances?

MIM can produce intricate, repeatable components with tight tolerances, but achievable tolerances depend on the material, geometry, feature location, and production process. Greene Group reviews these requirements during design for manufacture and validates the process before full-scale production.

What is micro-MIM?

Micro-MIM applies metal injection molding to very small components and fine features. Greene Group lists capabilities including part weights as low as 0.02 grams and walls as thin as 0.003 inches over specified lengths. Its page cites electrodes, links, insulators, disks, and grips as examples of component types.

What is the difference between metal and ceramic injection molding?

Metal injection molding (MIM) produces metal components, while ceramic injection molding (CIM) produces ceramic components. Both use molding to create complex shapes, followed by processing to form the finished part. The choice depends on the performance requirements and material properties needed for the application. Greene Group offers both processes and develops specialized metal and ceramic materials.

Can Greene Group support metal injection molding for medical devices?

Yes. Greene Group identifies medical, surgical, dental, and pharmaceutical components as applications for its MIM and CIM capabilities. Its support includes design for manufacture, prototyping, material development, and documented process validation. Suitability for a particular device or component should be assessed against its specifications and applicable requirements. Explore our medical device contract mannufacturing services.