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yield stress is the maximum resistance to deformation per unit area and proof stress is the allowable resistance to deformation per unit area.

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Q: What is the difference between yield stress and proof stress?
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Related questions

Is yield strength and proof stress same?

Yes it is the same. Offset Yield strength = 0.2% Proof Stress


What is the difference between Allowable Stress Design and Working Stress Design?

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What is Characteristic yield strength of steel in terms of minimum yield stress and percent proof stress?

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When the stress-strain curve of a material fails to produce a clear yield strength.


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Difference in strength, 275 and 355 refer to minimum yield stress of the material (275 MPa and 355 MPa).


Difference between yield stress and yield strength?

Stress is a measure of the load applied to a sample relative to a cross sectional area of the sample. Strength is a quantification of the samples ability to carry a load. The terms "yield strength" and "yield stress" of a material are usually used interchangeably (correct or not). It is the stress which will just cause the material to plastically deform. If a material yields at 30,000 psi, the yield stress is 30,000 psi. If the part in question has a cross sectional area of 2 square inches, the strength at yield would be 60,000 pounds, but usually we just say the yield strength is 30,000 psi.


What is the relation between yield stress and allowable stress?

A factor of safety against yield is applied to design stress Yield Stress/ Design Stress = Factor of safety The factor of safety varies for different industries; 1.5 is used in structural steel design for buildings; 1.25 or even 1.1 for aircraft/space systems


What is difference between the proportional limit and the yield point of a string that has been over stretched?

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What is the difference between a discount yield and a bond equivalent yield?

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What is the difference between YTD Return vs Yield?

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What is the relationship between the yield shear stress and uni axial yield stress in tension?

It depends on the material. Most metals obey the maximum distortion energy law in which the shear yield is the tensile yield divided by square root of 3, or 0.577 x tensile yield.