Tensile strength measures how much pulling force a material can withstand before it breaks. In this test, a 32 mm diameter steel rebar is clamped at both ends and stretched until failure. As the load increases, the bar elongates slightly, storing potential energy as internal tension builds. The recorded breaking force of around 570 kilonewtons, or approximately 58 tons, represents its ultimate tensile strength. This value shows the maximum stress the rebar can handle before the internal bonds be