And you are telling me those are less flexible than tungsten carbide? They are rubber in comparison. Young’s modulus for WC is 550 GPa. Granite is about 70 GPa and concrete about 30 GPa. Oh, steel is at 200 GPa.

So what is the actual reason you see metal flexing when it is actually far harder to flex it?

1. Much smaller cross section or specifically second moment of area while very long.
2. Nothing, there is only that one reason really. Things get very easy to bend once they get thin and long.