
Generally the higher the force to bend (usually up to the point of break) the firmer the sample.
The force and distance references at the point of break provide a measure of BREAK STRENGTH by this action.
STIFFNESS is associated with a material that cannot easily be bent and therefore has a high degree of hardness and usually lacks flexibility.
FLEXIBILITY is the opposite of this and is a characteristic of a product that can be bent, flexed or deformed to a much higher degree of deformation before failing.