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Tensile Strength

Force per unit of original cross-sectional area (stress), loaded in tension, at which mechanical failure occurs. Ultimate tensile strength (UTS) is measured at rupture, while yield tensile strength is measured at the onset of irreversible plastic deformation.

Relevant ASTM testing standards include C1273 and C1366 for ceramics (at ambient and elevated temperatures, respectively), D412 for elastomers, D638 for plastics, D1623 for rigid polymeric foams, D3039 for polymeric-matrix composites, D3552 for metal-matrix composites, and E8 for metals.

ISO tests include 37 for elastomers, 527 for plastics, 1926 for rigid polymeric foams, and 6892 for metals. ISO testing standards for the tensile properties of ceramics are heavily fragmented.

Material Properties Explained

Material Properties Explained is a handbook published by It is a concise encyclopedia of engineering material properties. It is not tied to the material properties database, and covers a far larger number of properties than those used on the website. Subject matter includes:

  • Differences in definition and testing between types of materials.
  • Common testing variations and their significance.
  • What additional information is required to correctly interpret a value.
  • Any equations to calculate or estimate property values.
  • Synonyms and related terms.
  • Relevant international testing standards, including both ASTM and ISO.

To purchase a digital (PDF) copy: Material Properties Explained.

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