Quote Originally Posted by a completely inoffensive name View Post
That is simply not true and I am telling you that. Metals can be fabricated to have many multiple thin layers with space in between them. This may be better for micrometeorite protection because the impact usually liquifies the object that is crashing into the space station. The thin layer with gaps may ensure minimum damage because the liquified meteorite will not have the cohesion after the first few layers to puncture the other layers. This is something that simply can't be done with rock.
Asteroids contain a whole bunch of common metals, especially iron. That's the point of processing them in space, since Earth already has enough of iron.