Zamak Injection: High-Precision Die-Cast Components for Industrial Applications
Zamak is a versatile family of zinc-aluminum alloys widely used in die-casting for producing complex, durable, and cost-effective components. The unique combination of zinc, aluminum, magnesium, and copper provides superior mechanical strength, excellent corrosion resistance, and outstanding dimensional stability. Thanks to these properties, Zamak Injection has become a preferred method in industrial manufacturing for creating precise, high-quality parts in large volumes with consistent and repeatable results. Its ability to meet demanding performance standards makes it ideal for automotive, industrial, consumer, and electronic applications.
At Sumiparts SAS, we specialize in the Zamak Injection process, delivering high-precision die-cast components tailored to the specific needs of our clients. Our advanced injection machines, combined with the expertise of our skilled engineering team, allow us to manage a wide range of part geometries, from simple shapes to highly intricate designs. Every project benefits from our detailed attention to design, production, and finishing processes, ensuring components meet strict quality standards.
The process begins with the development of a custom mold designed using advanced CAD software. This mold serves as the foundation for high-pressure injection, where molten Zamak is carefully injected under controlled conditions. The alloy rapidly solidifies, producing finished parts that often require minimal post-processing. This precision allows for reduced assembly requirements, shorter production cycles, and a lower need for secondary operations, making the process highly efficient for mass production.
Our comprehensive capabilities include:
High-Precision Die Casting: We produce parts with exceptionally tight tolerances, suitable for automotive components, industrial machinery, consumer products, and specialized equipment.
Complex Geometries: The injection process enables the creation of intricate designs and detailed features that would be difficult or impossible with traditional manufacturing methods.
Surface Finishing: We offer polishing, plating, coating, and other surface treatments to achieve both functional and visually appealing finishes.
High Production Volume: Zamak Injection supports large-scale manufacturing while maintaining consistent quality and performance standards across every batch.
One of the key advantages of working with Zamak is its relatively low melting point, between 350-385 °C, which reduces energy consumption compared to other metals. This characteristic, combined with precise injection techniques, allows for faster cycle times, cost savings in machining, and exceptional surface quality. Parts manufactured using Zamak Injection are not only durable and accurate but also display excellent surface finishes suitable for further processing or decorative applications.
In Sumiparts SAS we offer the Zamak Injection service that can be beneficial for your business. The material requires less energy consumption for its transformation, as it melts between 350-385 °C. Precision Zamak injection makes it possible to manufacture parts in large volumes with high precision. Faster injection cycles, savings in machining and better finishes with excellent surface treatments.

Advantages and Industrial Applications of Zamak Injection
At Sumiparts S.A.S., we proudly supply the automotive, industrial, and construction sectors with high-quality Zamak injection parts that meet the strictest standards of precision and durability. Our expert engineering and production team ensures that every component is manufactured with meticulous attention to detail, guaranteeing both consistency and reliability across large production volumes.
Zamak, as a zinc-aluminum alloy, offers exceptional mechanical strength, excellent castability, and outstanding cost efficiency. Its properties make it ideal for producing complex and durable components in high volumes while maintaining minimal energy consumption. The alloy’s relatively low melting point allows for faster injection cycles, reducing production times and lowering manufacturing costs without compromising quality.
In addition to standard Zamak injection, we provide advanced machining options to achieve fully customized parts according to client specifications. Our finishing processes, including polishing, plating, and coating, enhance the surface quality and aesthetics of every component, ensuring that they meet both functional and visual requirements.
With our state-of-the-art Zamak injection equipment and experienced technical team, Sumiparts S.A.S. delivers components that combine precision, reliability, and efficiency. From small, intricate parts to large-scale industrial components, we support businesses in achieving optimized production, cost savings, and high-quality results for every application.
Premium Zamak Alloy Selection Matrix
Our metallurgical engineering lab configures and runs distinct zinc alloy grades tailored precisely to your application’s mechanical load profile:
Zamak 3 (ASTM AG40A): The undisputed global standard for zinc die casting. It provides the absolute best balance of physical properties, excellent ductility, high impact strength, and long-term dimensional stability, making it the premier choice for electronic housings and automotive components.
Zamak 5 (ASTM AC41A): Infused with a higher copper percentage (approx. 1%). This chemical variation elevates the material’s tensile strength, hardness, and creep resistance by up to 10% to 15%, optimized for heavy-duty structural hinges, industrial gears, and high-wear locking mechanisms.
Zamak 2 (ASTM AC43A): Offering the highest hardness and tensile strength among the standard Zamak family, utilized in heavy mechanical components subjected to continuous structural friction.
Engineering Benefits: Net-Shape Accuracy and Tooling Longevity
Specifying a custom Zamak injected component from Sumiparts delivers immediate financial and structural advantages across your product lifecycle:
Ultra-Thin Wall Profiles (<0.6 mm): Due to Zamak’s high fluidity and low surface tension, it can easily flow into ultra-thin mold channels without freezing prematurely. This allows us to design incredibly lightweight components without sacrificing structural integrity.
Extended Die Tooling Lifespan: Aluminum melts at much higher temperatures, causing thermal shock and “soldering” that degrades steel molds within 100,000 cycles. Zamak melts at a low temperature (approx. 385 °C / 725°F). This thermal mitigation allows our through-hardened H13 premium tool steel molds to continuously run for over 1,000,000+ shots without dimensional drifting or mold erosion, drastically lowering your amortization CapEx.
Flawless Electroplating and Finishing Baseline: The smooth, pore-free surface skin dropping off our presses serves as an ideal canvas for high-purity decorative and protective surface coatings—including chrome plating, automated powder coating, and specialized e-coating.
Experienced Team and Tailored Manufacturing Solutions at SUMIPARTS SAS
SUMIPARTS SAS has an experienced team of staff, who with their knowledge and skills can provide an excellent service and final product tailored to the needs.
Contact us by calling the Pbx: +57 748 22 13, mobile phones (+57) 318 728 7721 WhatsApp click here, or by sending an email to info@sumiparts.com. Our technical team will be at your disposal to assist you







