Materials used in aluminum alloy die casting parts: HPDC vs. LPDC

Aluminum alloy die casting is a manufacturing process that uses molten aluminum to create complex, high-precision parts. The molten aluminum is injected under pressure into a die cavity, which gives the part its final shape.

The two main types of die casting are HPDC and LPDC. HPDC is a more demanding process than LPDC, and the materials used must be able to withstand the higher pressures and temperatures involved.

Materials used in HPDC

HPDC alloys typically have a higher silicon content than LPDC alloys, which improves their fluidity and castability. HPDC alloys also typically have a lower magnesium content than LPDC alloys, which reduces the risk of shrinkage porosity.

Some common HPDC alloys include:

A380

A384

A390

Materials used in LPDC

LPDC alloys typically have a lower silicon content than HPDC alloys, which reduces their fluidity and castability. However, they also have a higher magnesium content, which improves their ductility and toughness.

Some common LPDC alloys include:

A360

A413

A443

View More Aluminum Alloy

Choosing the right material

The choice of alloy for a particular die casting part will depend on the specific requirements of the application. Factors to consider include:

The strength required

The ductility required

The corrosion resistance required

The complexity of the part

The thickness of the part walls

The die casting process being used

HPDC vs. LPDC

HPDC alloys are generally better suited for parts that require high strength, good dimensional accuracy, and a smooth surface finish. LPDC alloys are generally better suited for parts that are complex in shape or have thick walls.

Here is a table comparing HPDC and LPDC alloys: