Difference Between Cast Aluminium and Extruded Aluminium
Cast aluminum and extruded aluminum are both made from aluminum, but they are manufactured in different ways. This results in different properties and applications for each type of material.
Cast aluminum is created by pouring molten aluminum into a mold. This process can create complex shapes, but it can also result in defects such as porosity and shrinkage. Cast aluminum is typically stronger than extruded aluminum, but it is also more expensive.
Extruded aluminum is created by forcing molten aluminum through a die. This process can create long, straight sections of aluminum with a consistent cross-section. Extruded aluminum is typically less strong than cast aluminum, but it is also less expensive and more lightweight.
The following table summarizes the key differences between cast aluminum and extruded aluminum:
| Feature | Cast Aluminum | Extruded Aluminum |
|---|---|---|
| Manufacturing process | Pouring molten aluminum into a mold | Forcing molten aluminum through a die |
| Strength | Stronger | Weaker |
| Cost | More expensive | Less expensive |
| Weight | Heavier | Lighter |
| Shape | Complex shapes possible | Straight, long sections possible |
| Applications | Heavy-duty applications, such as castings and forgings | Lightweight applications, such as window frames and railings |
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Ultimately, the best type of aluminum for a particular application will depend on the specific requirements of that application.
Here are some examples of how cast aluminum and extruded aluminum are used in different applications:
- Cast aluminum is often used for castings and forgings, which are strong and durable parts that are used in a variety of industries, such as automotive, aerospace, and construction.
- Extruded aluminum is often used for window frames, railings, and other lightweight structures that need to be strong and corrosion-resistant.
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