What material are new model cylinder heads commonly made from?

New model cylinder heads are commonly made from aluminum for several reasons. Aluminum is lightweight, which helps improve vehicle performance by reducing overall weight, and it has excellent thermal conductivity properties, allowing for efficient heat dissipation. This is crucial in engine performance, as effective cooling can prevent overheating and enhance engine longevity. Additionally, aluminum can be easily cast into complex shapes, making it suitable for the intricate designs often seen in modern engine components. Compared to the other materials listed, aluminum strikes an ideal balance between strength, weight, and cost, making it the preferred choice in contemporary automotive engineering.