Wire Facts / Tensile, Yield and Elongation

Tensile tests are conducted to determine tensile strength, yield strength and elongation of a material. These properties depend on the alloy and temper as well as shape of the material being tested. ASTM E 8 specifies tensile testing procedures for metallic materials. Definitions Tensile Strength
The maximum stress the material will sustain before fracture. The tensile strength is calculated by dividing the maximum load by the original cross-sectional area of the test specimen. Yield Strength The stress corresponding to a specified permanent (plastic) deformation. The specified permanent
deformation has been standardized in the non-ferrous industry as 0.2% offset on the stress-strain curve. Elongation The increase in the gauge length, measured after fracture of the specimen within the gauge length, usually expressed as a percentage of the original gauge length.


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