Originally Posted by FlowerBlossom
Now, change the configuration of those tubes and you can get these characteristics to change. That's why details like bigger tubes and thicker walls are found in aluminum compared to steel.
AL tubes are generally larger diameter and thinner wall thickness than a narrow steel tube. That's why they are more easily damaged and are lighter than a comparable steel frame.
If AL bikes had bigger tubes and thicker tubes they would be much heavier than steel bikes - which is not the case.