Types of Metals Alloys Used in Die Casting

Types of Metals Alloys Used in Die Casting

As mentioned previously, die casting is a manufacturing process highly favoured by many companies, as it helps minimise the need for secondary operations such as trimming and machining. In addition, it also shortens the time needed to fabricate products, thus elevating cost process efficiency.

Furthermore, die casting as a process offers a certain degree of uniformity, the ability to attain near net shapes and minimal draft angles, as well as quality surface finishes for the completed products. One point to note however, is that it might be slightly more difficult to cast some metals that are sturdier in composition (e.g. certain grades of Steel). This is why manufacturers opt for other casting methods when it comes to sturdier metals.

For die casting, it is generally effective when metals with low fusing temperatures are used, which is why only a certain range of metals and alloys are suitable for this process. Read on to find out more about some of these commonly used alloys.

The A to Z of Alloys and Their Usage

Here are two of the more commonly used metal alloys.

Aluminium Alloys

Die cast aluminium alloy is often used to manufacture a wide variety of automobile parts and gears, aerospace components, and surgical instruments among others. Aluminium alloy is generally stronger and lighter than Zinc alloys, but will also be costlier to create. The use of Aluminium alloys potentially reduces the need for finishing treatments such as plating. Other metals used in the creation of Aluminium alloys include Copper (for common grade Aluminium alloys), Magnesium (for better tensile strength), and Nickel (for better rigidity and better surface finishing). The melting point for an Aluminium alloy is approximately 620°C.

Zinc Alloys

Die cast zinc alloys are relatively easy to die cast as they react well to the moulding process. This alloy is generally used in the manufacture of electronic devices, fuel systems, and other products that require complex net shaped housings. In addition, Zinc alloys in comparison to other metals are castable to closer tolerances and are able to attain near net shapes. Other metals used in the creation of Zinc alloys include Copper (for higher rigidity) and Tin (for better malleability). The melting point for a Zinc alloy is in the range of 370°C to 430°C.

Which Die Cast Metals Alloys to Use and Produce?

When choosing a suitable metal alloy for your precision die casting process, a variety of factors will have to be considered. These include what the alloy would be used for, the temperature at which it operates, the availability of materials, and more.

The function and use of the final product will also decide which die cast metal alloy to use. For example, if the component requires high strength and resistance to corrosion, an Aluminium alloy would be ideal. Another consideration is production volume. With proper maintenance, Aluminium die cast products can last for a very long time while those casted from Zinc will need periodic replacement.

Here at EKO Industries, the types of die cast metal alloys we use are Aluminium and Zinc. Some of the more commonly used Aluminium alloys include the likes of ADC 1, ADC 3, ADC 5, ADC 10, and ADC 12. As for Zinc alloys, it would be Zamak 3 and Zamak 5.

Choose EKO for Your Die Casting Needs

With over 20 years of experience, EKO Industries consistently delivers value through our die casting supplier expertise as well as efficiency in our operations. If you are interested to learn more about our die casting process or some of our other manufacturing capabilities, contact us to find out more.

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