What is the difference between tensile strength and yield strength?
Tensile strength or ultimate tensile strength is the load, usually expressed in PSI, required to cause failure in tension (stretching). Yield strength, also called yield point, is the load, expressed in PSI, that is necessary to stretch the cap screw to the point where, after the load is removed, the cap screw will not return to its previous length. Cap screws that have reached their yield point cannot be reused.
