Table 9.8.4.1.1: Example of Use of Strain Departures to Establish Typical Stress-Strain Curve

MIL-HDBK-5J, Metallic Materials and Elements for Aerospace Vehicle Structures

Last Updated 29 Oct 2026

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a Average of Tests 1, 2, and 3.
b $\quad \sigma_{\mathrm{T}}=\left(\text { Product average yield strength } \div \text { average yield strength }\right) \times \sigma_{\mathrm{A}}$ .
c $\varepsilon_{\mathrm{E}}=\sigma_{\mathrm{T}} / \mathrm{E}$ .
$\mathrm{d} \quad \varepsilon_{\mathrm{T}}=\varepsilon_{\mathrm{E}}+\mathrm{D}$ .
e Product average yield strength.
f Average yield strength.

MIL-HDBK-5J

MIL-HDBK-5J, Metallic Materials and Elements for Aerospace Vehicle Structures

Last Updated 29 Oct 2026

Hover any section to copy its link or text, ask Copilot about it, or bookmark it.

a Average of Tests 1, 2, and 3.
b $\quad \sigma_{\mathrm{T}}=\left(\text { Product average yield strength } \div \text { average yield strength }\right) \times \sigma_{\mathrm{A}}$ .
c $\varepsilon_{\mathrm{E}}=\sigma_{\mathrm{T}} / \mathrm{E}$ .
$\mathrm{d} \quad \varepsilon_{\mathrm{T}}=\varepsilon_{\mathrm{E}}+\mathrm{D}$ .
e Product average yield strength.
f Average yield strength.