Steel is more elastic than rubber.........

In solid mechanics, the slope of the stress-strain curve at any point is called the tangent modulus. The tangent modulus of the initial, linear portion of a stress-strain curve is called Young's modulus, also known as the tensile modulus. It is defined as the ratio of the uniaxial stress over the uniaxial strain in the range of stress in which Hooke's Law holds. It is a measure of the stiffness of an elastic material and is a quantity used to characterize materials. It can be experimentally determined from the slope of a stress-strain curve created during tensile tests conducted on a sample of the material. In anisotropic materials, Young's modulus may have different values depending on the direction of the applied force with respect to the material's structure.
The Young's modulus of steel is approximately 200GPa while that of rubber is about 0.01 to 0.5 which is very small in comparison to steel.So steel is more elastic than rubber. This is Experimentally found.One of such experiment is dropping a steel and rubber ball in a hard surface and steel ball bounces more than rubber.
Isn't it amazing...................