Ultimate Tensile Stress (UTS)

Definition - What does Ultimate Tensile Stress (UTS) mean?

Ultimate tensile stress (UTS) is the maximum stress that a material can withstand while being stretched or pulled. The ultimate tensile stress of a material is calculated by dividing the stress placed on the material, generally expressed in terms of pounds or tons per square inch of material by the cross-sectional area of the tested material.

Corrosionpedia explains Ultimate Tensile Stress (UTS)

The ultimate tensile stress (UTS) is usually found by performing a tensile test and recording the engineering stress versus strain curve. The highest point of the stress-strain curve is the UTS. It is an intensive property; therefore its value does not depend on the size of the test specimen. However, it is dependent on other factors, such as:

  • Preparation of the specimen
  • Presence of surface defects
  • Temperature of the test environment and the material
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