It is usually a metal with a higher melting point and good fluidity, which is suitable for a stable die-casting process in a cold chamber die-casting machine. Generally speaking, the following types of metals can be used:
1. Aluminum alloy:
Aluminum is the most commonly used metal for cold chamber die-casting machines. Aluminum alloys have a lower melting point, good fluidity and processing properties, and are suitable for efficient die-casting production in cold chamber die-casting machines. Common aluminum alloys include ADC12, A380, etc.

2. Magnesium alloy:
Magnesium alloys can also be die-casted using cold chamber die-casting machines in some specific applications due to their low density, high strength and good mechanical properties. Common magnesium alloys include AZ91D, etc.

3. Copper alloy:
Copper alloys generally have a higher melting point and poor fluidity, but some copper alloys such as brass and tin bronze can also be die-casted on some special cold chamber die-casting machines.

4. Other high melting point alloys:
Some alloys with high melting points, such as zinc alloys (such as Zamak series), can also be die-cast in appropriate cold chamber die-casting machines.
The working principle of the cold chamber die casting machine is to heat the metal to melt in a separate melting chamber, and then fill the molten metal into the mold by pressure to form the part. Due to the characteristics of this type of machine, it is able to handle high melting point metals and maintain a stable operating temperature, making it suitable for die casting production of the above-mentioned types of metals.