The point at which a metal stretches, but does not break under a certain load is called the _____ point

The point at which a metal stretches, but does not break under a certain load is called the _____ point

• A. Yield
• B. Tensile
• C. Stretch
• D. Ultimate Strength

Answer: (A)

The point being tested is the onset of plastic deformation. This is where the metal begins to permanently deform under load and will not return to its original shape when the load is removed. Before this point, deformation is elastic and the material would snap back if unloaded. After this yield point, the metal can stretch further but retains the permanent change. That’s why yield is the best choice. Tensile strength and ultimate strength describe the maximum stress the material can withstand before failure, not the start of permanent deformation. And “stretch” isn’t a defined point on the material’s stress–strain behavior.

The point being tested is the onset of plastic deformation. This is where the metal begins to permanently deform under load and will not return to its original shape when the load is removed. Before this point, deformation is elastic and the material would snap back if unloaded. After this yield point, the metal can stretch further but retains the permanent change.

That’s why yield is the best choice. Tensile strength and ultimate strength describe the maximum stress the material can withstand before failure, not the start of permanent deformation. And “stretch” isn’t a defined point on the material’s stress–strain behavior.