Tensile Strength | Yield Strength | Ultimate Strength | Breaking Strength

Saturday, December 4, 2010 18:54
Posted in category Mechanics of Solids 1
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Tensile Strength

Tensile strength is the stress at the maximum on the stress-strain curve. 


The greatest longitudinal or axial stress a material can bear without breaking.

 Tensile strength is the maximum amount of tensile stress that a material can take before failure. There are three definitions of tensile strength

  • Yield strength
  • Ultimate strength
  • Breaking strength

Yield Strength

The stress at which material strain changes from elastic deformation to plastic deformation, causing it to deform permanently. This point is not a well defined point.  We can say that yield strength is a strength which a material can bear without permanent deformation.

Yield strength of Structural steel A36 is 250 MPa.

Ultimate Strength

The maximum stress a material can withstand. Ultimate tensile strength of Structural steel A36 is 400 MPa.

Breaking Strength

The stress coordinate on the stress-strain curve at the point of rupture.

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