Final answer:
Aluminum extrusions are commonly used in automotive applications like strut towers, frame rails, and tie bars due to their lightweight and versatility, excluding rocker panels.
Explanation:
Aluminum extrusions are commonly utilized in various applications like strut towers, frame rails, and tie bars for their lightweight and versatile properties. However, they are typically not used in rocker panels due to the need for more structural reinforcement in that area.
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