Question: what are spider-man's webs made out of?
Answer: Carbon nanotubes are even stronger, with scientists reporting that they can handle 63 GPa or more. (Though according to the 1986 Official Handbook of the Marvel Universe, Spidey's webs are made of a nylon-like material that can support only a measly 54 kilograms per square millimeter, or 0.5 GPa.)