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MaterialsMay 9, 2026|3 min read

Yield Strength

Yield Strength is a core engineering term. Definition, usage notes, and a practical example.

Definition

Yield strength is the approximate stress where permanent deformation begins.

Why it matters

Many mechanical allowable stresses are derived from this value.

How it is used

In a design check, first define the relevant load, dimension, material, or flow condition. Then interpret this term by its role in the formula and compare it with limits.

Example

For S235 steel, yield strength is a key design check input.

Formulas

No formulas added for this term.