Overview

Metal Injection Molding (MIM) is a revolutionary manufacturing process that combines the design freedom of plastic injection molding with the strength and integrity of wrought metals. At Yujiaxin Tech, our MIM process utilizes advanced multi-cavity tooling and precision molding machines to produce complex, near-net-shape metal parts with exceptional dimensional accuracy. We achieve tolerances down to ±0.02 mm with surface finishes as fine as Ra 0.8 μm. Our MIM production lines support part weights from 0.1 g to 200 g, with minimum wall thickness as low as 0.3 mm. The process is ideal for high-volume production runs from 1,000 to 100,000+ pieces, offering significant cost advantages over CNC machining for complex geometries. With sintering densities reaching 95-99.8% of theoretical, MIM parts exhibit mechanical properties comparable to wrought materials, making them suitable for demanding applications across medical, automotive, aerospace, and electronics industries.

Key Advantages

<ul><li>Complex geometry capability — produce intricate shapes impossible with traditional machining</li><li>High material utilization — over 95% material efficiency, minimal waste compared to machining</li><li>Excellent surface finish — achieve Ra 0.8 μm directly from the process, reducing secondary operations</li><li>Cost-effective at scale — per-part cost drops significantly above 1,000 units</li><li>Superior mechanical properties — sintered density reaches 95-99.8% of theoretical</li><li>Wide material selection — supports stainless steels, titanium alloys, nickel alloys, and more</li></ul>

Applications

<ul><li>Medical devices — surgical instruments, orthopedic implants, dental brackets</li><li>Automotive components — fuel injector parts, turbocharger vanes, shift levers</li><li>Aerospace — locking mechanisms, sensor housings, connector shells</li><li>Electronics — micro connectors, shielding components, heat sinks</li><li>Consumer goods — watch cases, eyewear components, firearm parts</li></ul>

Technical Specifications

Parameter	Specification
Tolerance (General)	±0.02 mm - ±0.05 mm
Surface Finish (Ra)	0.8 - 1.6 μm
Max Part Weight	Up to 200 g
Min Wall Thickness	0.3 mm
Density	95 - 99.8% theoretical
Production Volume	1,000 - 100,000+ pieces
Tooling Lead Time	4 - 6 weeks
Typical Cycle Time	30 - 60 seconds

Frequently Asked Questions

What is the minimum order quantity for MIM parts?

For Metal Injection Molding, the typical MOQ starts at 1,000 pieces. For smaller quantities, we recommend considering CNC machining as an alternative. Contact our team for a detailed evaluation of your specific project requirements.

What metals can be used in MIM?

MIM supports a wide range of materials including stainless steels (316L, 17-4PH, 304), low-alloy steels, titanium alloys, nickel alloys, copper alloys, and cobalt-chrome. Nearly any metal that is available in powder form can be processed through MIM.

How does MIM compare to CNC machining for complex parts?

MIM excels at producing complex geometries in high volumes at low per-part cost, while CNC machining offers tighter tolerances for low-volume production. MIM is also better for parts with internal threads, undercuts, and thin walls that would be difficult to machine.

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