There are the limitations of aluminum die casting（https://www.jtrmachine.com/aluminum-die-casting）：
High Tooling Costs:
The creation of high-quality dies is a significant investment, making it unsuitable for low-volume production runs.
The cost of designing, manufacturing, and maintaining dies can be substantial.
Part Size Limitations:
While versatile, there are limitations on the size and complexity of parts that can be produced.
Extremely large or very small parts can be challenging to cast effectively.
Porosity:
Porosity (tiny air pockets) can occur within the casting, potentially affecting its mechanical properties.
Careful process control and post-processing techniques are necessary to minimize porosity.
Material Limitations:
While aluminum is widely used, limitations exist in the types of alloys and their specific properties achievable through die casting.
