Yield Strength
| Formula / Notation | σ_y = F_y / A₀ |
|---|---|
| Also Known As | Yield point, proof stress, 0.2% offset yield, elastic limit (approximate) |
What is Yield Strength?
Yield strength is the stress at which a material begins to deform plastically (permanently) — below this stress, deformation is elastic (recoverable). It is a critical material property in engineering design. For metals, the yield point is clearly defined; for polymers, yield is more gradual. The 0.2% offset yield strength is commonly used when a clear yield point is absent.
Formula & Notation
Other Names / Synonyms: Yield point, proof stress, 0.2% offset yield, elastic limit (approximate)
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Yield strength is the stress at which a material begins to deform plastically (permanently) — below this stress, deformation is elastic (recoverable). It is a critical material property in engineering design. For metals, the yield point is clearly defined; for polymers, yield is more gradual. The 0.2% offset yield strength is commonly used when a clear yield point is absent.
Structural engineering design (ensuring components don't yield permanently under load). Pressure vessel design. Chemical plant equipment specification. Manufacturing process design. Failure analysis. Material selection for corrosive environments. Medical implant design.
Materials engineering property — no direct chemical safety concern. Structural failure from exceeding yield strength can cause catastrophic failure of equipment (pressure vessels, reactors). Yield strength data essential for chemical plant safety.
The formula or notation for Yield Strength is: σ_y = F_y / A₀