Tensile Stress can be defined as the magnitude of force applied along an elastic rod, which is divided by the cross-sectional area of the rod in a direction perpendicular to the applied force. And is denoted by σt. Tensile Stress is usually measured using the Newton per Square Millimeter for Stress. Note that the value of Tensile Stress is always positive. Typically, the value of Tensile Stress is greater than 0.