Die casting is a manufacturing process in which molten metal is poured or pressed into a steel mold. Dies (also known as tools or dies) are made of steel and are specially designed for each project. This allows each component to be created in an accurate and repeatable manner. Aluminum, zinc and magnesium are the most commonly used alloys for die casting.

Advantages of die casting
Die casting offers significant advantages over other manufacturing processes, often leading to significant cost savings, not only in the part price itself, but also in overall production costs. When casting parts, you can create complex net shapes including external threads and complex internal features with minimal draft angles - minimizing secondary operations. You can also combine multiple parts into one, eliminating assembly operations and reducing labor costs, with the added benefit of simplified inventory control and greater assembly consistency.
Other benefits include:
variable wall thickness
tighter tolerances
Fewer steps from raw material to finished product
fast production cycle time
reduce waste
Long tool life, especially for zinc and magnesium

Die casting alloy
Zinc, aluminum and magnesium are the three main die casting alloys. They are usually non-ferrous metals, and their mechanical properties vary widely to suit almost every type of application a manufacturer may need. Not only can die-cast alloys withstand high operating temperatures, but they are also fully recyclable. Die casting alloys also have:
Die-cast zinc, die-cast aluminum, die-cast magnesium
good corrosion resistance
high strength and hardness
high thermal conductivity
high conductivity
Excellent EMI/RFI shielding performance
good finishing properties
In addition, each die casting alloy offers a variety of advantages not offered by the other alloys. This is one of the great things about die casting, you are not limited when it comes to choosing the right metal.