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Metal Injection Molding Manufacturers and Companies

IQS Directory is a top industrial directory listing of leading industrial metal injection companies and suppliers. Access our comprehensive index to review and source metal injection molding companies with preview ads and detailed product descriptions. These metal injection molding companies can design, engineer and provide metal injection molding services to your specifications and application needs. A quick and easy to use request for quote form is provided for you to contact these metal injection molding companies and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. Read customer reviews and product specific news articles. We are the right resource for your information requirement whether its for custom metal molding services, powdered metal sintering services, or complex injection molding services.

  • Tulsa, OK 918-663-7511

    Since 1967, PSP has been a leader in small, intricate custom powdered metal parts for a wide range of industries, such as Sports & Recreation, Power Tools, Industrial Equipment, Oil & Gas. We make the economic benefits of powder metallurgy – or P/M – available to a wider range of customers. Let us show you the superior design, consistency, precision & finish over casting, forging or machining.

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  • St. Marys, PA 814-781-1033

    Our powdered metal services have been around for 6 decades. Innovative Sintered Metals produces powdered metal parts from a wide variety of materials. Our powdered metal knowledge and sintered expertise result in the best powder metal parts available. ISO/TS 16949: 2009 certified. We are a very diversified organization serving the commercial construction, pump, automotive, appliance & lock industries.

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  • Los Angeles, CA 888-663-8256

    Our metal injection molding cannot be topped! We have years of field industry experience that we want to put to work for you. It is our mission that we will be able to offer high quality customer service as well as products that will withstand the tests of time to provide lasting value. For more information on what we may be able to do for you, get in touch with our customer service department today!

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  • Sykesville, PA 814-894-2461

    As a powder metal specialist, we will gladly consult with you about any gears, pulleys and sprockets you need. Symmco makes sintered stainless parts: cams, food processing machinery parts, gears, structural components. In inventory: SAE 841-sintered bronze, bearings, cored and solid bar, rectangular plate. We have a capacity of 5 tons through 750 tons. Contact us today to learn more about our capabilities.

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  • Garden Grove, CA 714-898-9151

    We specialize in Hot Isostatic Processing of powder metal parts. Even if it is complex or large, we can design and manufacture the parts for you. Synertech is experienced with net shape and selectively net shape powdered metal parts. Some of our products include powder billets and jet engines.

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Metal Injection Molding Industry Information

Metal Injection Molding

Metal injection molding, also called MIM, is a low cost, high volume manufacturing process that produces custom metal parts near to net shape. It combines the way injection molded plastics are formed with powdered metal sintering to create metal or ceramic parts. These parts are stronger, denser, and more capable of complex geometric shapes than most forged or die cast metal parts.

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Applications of Metal Injection Molding

A relatively new invention in manufacturing, metal injection molding combines the flexibility of the injection molding process with the strong structural integrity of sintered powdered metal. The strength, economy, and capacity for complex shapes demonstrated in injection molded metal and ceramic parts are sought-after attributes. As such, metal injection molding is becoming more widely utilized by telecommunications, automotive, medical and dental instrumentation, industrial parts, orthodontics, firearms, hardware and lock components, computer and electrical application industries.

Materials Commonly Used in Metal Injection Molding

  • Ferrous-Based Alloys
  • Low Alloys
  • Stainless Steel
  • Copper
  • Chrome
  • Nickel Alloys
  • Semimetals
  • Intermetallic Compounds
  • Magnetic Ceramics

Manufacturing Process of Metal Injection Molding

Injection molded metal parts are formed from sintered powdered metal, as are regular powdered metal parts. The powdered metal or ceramic powder used in the injection molding process must, however, become plasticized in order to flow through the injection molding machine. Polymers called binders or wax are added to the powdered metal base, creating what manufacturers call "feedstock." The feedstock pellets are fed through a hopper into a screw conveyor where they are sheared and friction heated until the material becomes malleable, then it is extruded into a closed die at the screw conveyor's opposite end. The tools used here range from simple designs to multi-cavity molds. The molded part is allowed to cool until it has solidified, then it is ejected and the mold is filled again.

These molded but not yet sintered parts are called green parts. The polymers of these parts must be extracted through a process called debinding. Debinding can be done chemically (as through a solvent bath) or thermally, and sometimes the sintering process is even sufficient to break down green parts' polymers, dissipating them during the sintering process. Green parts are sintered between 2200 and 2550 degrees Fahrenheit and shrink in the process as the pores where polymers were close, creating densities between 95 and 98% (almost as high as that of wrought metals). This is done in a high temperature sintering oven.

Benefits of Using Metal Injection Molding

Despite the shrinking, closer and more accurate tolerances can be achieved with injection molded metals than with die-casting or forging. Metal powder parts, which must be cast or forged in multiple pieces, can often be molded and sintered as a single part, cutting down on expensive secondary assembly processes, such as drilling, etching, or assembling. Other post-processing operations like machining, heat treating, or plating take place at this time to enhance properties and reach higher tolerances. Resin impregnation is an example of a process used to enhance the lifespan of porous metal products.

The densities injection molded metals achieve not only give parts much higher strength, but also higher corrosion resistance and, for magnetic compounds, improved magnetic qualities. Although some short runs may still be more economical than die-casting or forging, injection molded metals are usually manufactured in long runs to balance high overhead mold tooling costs.



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Metal Injection Molding Informational Video