Yield Strength

Yield strength is a very important value for use in engineering structural design. If we are designing a component that must support a force during use, we must be sure that the component does not plastically deform.

The "Yield strength" of a material is defined as the stress applied to the material at which plastic deformation starts to occur while the material is loaded.

There is no definite point on the curve where elastic strain ends and plastic strain begins, the yield strength is chosen to be that strength when a definite amount of plastic strain has occurred. Yield strength is chosen when 0,2 percent plastic strain has taken place. The 0.2% yield strength or the 0.2% offset yield strength is calculated at 0.2% offset from the original cross-sectional area of the sample.

In contrast, the tensile strength is relatively unimportant for ductile materials selection and application since too much plastics deformation takes place before it is reached. However, the tensile strength can give some indication of the materials, such as hardness and material defects.

Yield Strength Variation

Understanding these sources of variation are essential in formulating a usseful quality management plan for large engineering projects (like platinum furnaces).

The first thing to notice is the bewilderingly wide array of names for the same grade of material. To help you, we have tried to explain naming conventions, the use of alloys, steel classifications etc. Just navigate on the menu to our Knowledge Base, a humble attempt at helping navigate and getting exactly what you need.