Technical Limit in MIM Process
In Metal Injection Molding , min wall thickness is a frequently discussed and critical parameter in both design and manufacturing. It directly impacts a part’s feasibility, performance, and overall cost. For industries that prioritize precision and lightweight design—such as 3C, medical devices, and aerospace—pushing wall thickness to its technical limits is often essential. So, how thin can MIM actually go?
Typically, the MIM process can achieve a minimum wall thickness ranging from 0.2 mm to 0.4 mm, which is significantly lower than the limits of conventional powder metallurgy. This capability results from combining the high flowability of plastic injection molding with the material integrity of sintered metal. By selecting fine metal powders, optimizing feedstock formulation, and precisely controlling mold design and injection parameters, this thickness limit can be pushed even further in suitable applications.
Real-World Applications of Ultra-Thin MIM Parts
3C: MIM is widely used to manufacture ultra-thin components such as SIM card trays, connector housings, and structural parts for headphones and wearables, where compact and lightweight design is crucial.
Medical Devices: The process enables the production of delicate, high-strength instruments, including thin-walled clamps, jaws for minimally invasive surgery, and precise catheter components that demand both accuracy and reliability.
