When a ductile metal or alloy is stressed beyond a certain point (the yield stress or elastic limit), it deforms plastically. The yield strength may be determined, during a tensile test, by dividing the load at the yield point by the original cross-sectional area of the test specimen.
(from the article `materials testing`) ...detrimental to strength; for example, exposure of polyethylene plastic for short periods of time increases its tensile strength. Longer exposures, ... The most common reason for alloying is to increase the strength of a metal. This requires that barriers to slip be distributed uniformly througho...
the stress required to produce a very slight yet specified amount of plastic strain.
The stress at which a material exhibits a specified deviation from proportionality of stress and strain. An onset of 0.2% is used for many metals.
The amount of stress at which a permanent (plastic) deformation in a component becomes measurable (usually taken as 0.2% permanent strain). ... (05 Mar 2000) ... 
The stress at which a material exhibits a specified limiting set, commonly taken by the offset method as 0.20 per cent of the specimen's original length. Expressed as psi.
The stress level at which material plastically deforms.
Indication of maximum stress that can be developed in a material without causing plastic deformation. It is the stress at which a material exhibits a specified permanent deformation and is a practical approximation of elastic limit. Offset yield strength is determined from a Stress-Strain Diagram. It is the stress corresponding to the intersection ...
Type: Term Definitions: 1. the amount of stress at which a permanent (plastic) deformation in a component becomes measurable (usually taken as 0.2% permanent strain).
The guaranteed minimum yield point stress of the material as specified by the steel supplier.
The force required to stretch a material.
The stress at which a material exhibits a specified deviation from propertionality of stress and strain. An offset of 0.2% is used for many metals.
the stress at which a steel specimen exhibits permanent deformation
the stress necessary to produce a given inelastic strain in a material.
The stress at which a material exhibits a specified limiting permanent strain.
The stress beyond which stainless steel undergoes important permanent flow — commonly specified as that stress producing a 0.2% offset from the linear portion of the stress-strain curve
The stress at which permanent deformation occurs in a tensile test. In many steels, this point is not readily distinguishable and a proof strength value is used as an alternative
The yield strength or yield stress of a steel relates to the level of stress in steel where plastic deformation commences.