Metal Injection Molding

Benefits of MIM

  • Provides a cost advantage when creating more complex products

  • Low mass products save time and materials as compared to machining the part

  • Easily produces large quantities of parts faster than machining.

  • Provides cleaner surface finishes with thinner walls 

Metal injection molding (MIM) is a manufacturing process that can produce intricate geometries in  metal parts, traditionally in larger quantities. MIM parts can have complex shapes, possess good strength and have excellent surface finishes, with mechanical properties similar to wrought  materials

A variety of metal powders are used for MIM. Stainless steels, the most common material, are used in just under half of all MIM applications. The 316L composition is frequently used  because of its combined strength and corrosion  resistance. Low-alloy steels are the second  most prevalent group used in MIM, rounded out  by iron-nickel alloys and specialty metals such  as titanium and tungsten, although these are  less common. Although aluminum feedstock is available, its use in MIM is rare. Because  aluminum is a soft metal, other metalworking  processes such as machining or casting tend to be more common. For hard metals such as  stainless or low-alloy carbon steels, machining  and casting become more problematic and MIM is the better process. Gateway international 360 currently uses  316L and 17-4PH stainless steels for MIM. 

MIM Specifications at Gateway International 360

  • Maximum part size is approximately 4 in. by 4 in. by 4 in. (10.1 cm. by 10.1 cm. by 10.1 cm.)

  • No deeper than 2 in. (5.1 cm.) from any parting line

  • Maximum projected mold area of 10 sq. in. (64.5 sq. cm.)

  • Maximum part volume of less than 1.25 cu. in. (20.48 cc.)

  • Walls as thin as 0.040 in. (0.10 cm.) are possible, depending on the size of the wall and the location of adjacent thicker sections

  • Wall thicknesses generally should not exceed 0.5 in. (1.27 cm.)

© 2017 Gateway International 360

260 Quigley Blvd.

Suite 135

New Castle, DE 19720 USA