I'm just a bit baffled and was curious if anyone could shed some light on a particular matter:
I'm currently taking an advanced Materials Science course, and have learned that steel has a higher modulus of elasticity than aluminum. Also aluminum as a material has better vibration dampening than steel. What this directly corresponds to is that steel is supposed to be stiffer and more rigid than aluminum. This goes completely counter to all my experience with bicycle frames.
Does anyone have a physical explanation for this? Is it simply that good steel bikes are made with thinner walled tubes, and aluminum bikes are generally made with larger cross sections? I realize there are a multitude of alloys and tempers for both materials, but my professor seems to believe steel will almost always be more rigid than aluminum.