2024-T861 is a precipitation-hardened aluminum-copper alloy (Al-Cu-Mg) subjected to solution heat treatment, controlled stretching, and artificial aging to achieve peak strength and improved stress-corrosion cracking (SCC) resistance. This temper provides tensile strength of approximately 65–73 ksi with enhanced resistance to sustained-load cracking compared to T4, making it suitable for highly stressed aerospace structural components where both strength and SCC resistance are critical.
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67 interactive curves for this material
Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.
Create free account| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Ultimate Bearing Strength(Fbru) | — | Pa | 5 entriesClick to expand | ||
Bearing Yield Strength(Fbry) | — | Pa | 6 entriesClick to expand | ||
Compressive Modulus(Ec) | 73.77 | GPa | 22°C · Drawn tubing | ||
Compressive Tangent Modulus vs Stress(Etn(σ)) | — | Pa | 9 entriesClick to expand | ||
Compressive Yield Strength(Fcy)4 entries | Curve (14 pts) | Pa | L | ||
| ↳ | Curve (9 pts) | Pa | L | ||
| ↳ | Curve (10 pts) | Pa | L | ||
| ↳ | Curve (10 pts) | Pa | L | ||
Elongation at Break(εf) | — | - | 9 entriesClick to expand | ||
Poisson's Ratio(ν) | 0.3300 | - | 22°C | ||
Residual Strength vs Initial Crack Length(Fr(2a0))3 entries | Curve (14 pts) | Pa | 21°C | ||
| ↳ | Curve (9 pts) | Pa | 21°C | ||
| ↳ | Curve (3 pts) | Pa | 21°C | ||
Shear Modulus(G) | 27.58 | GPa | 22°C · Drawn tubing | ||
Ultimate Shear Strength(Fsu)4 entries | Curve (12 pts) | Pa | — | ||
| ↳ | Curve (8 pts) | Pa | — | ||
| ↳ | Curve (7 pts) | Pa | — | ||
| ↳ | Curve (9 pts) | Pa | — | ||
Stress–Strain Curve (buckling region, ≤ 2% strain)(σ–ε (low-strain)) | — | Pa | 9 entriesClick to expand | ||
Ultimate Tensile Strength(σUTS) | — | Pa | 9 entriesClick to expand | ||
Yield Strength (0.2% offset)(σy) | — | Pa | 9 entriesClick to expand | ||
Young's Modulus(E) | 72.39 | GPa | 22°C · Drawn tubing | ||
3 interactive curves for this material
Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.
Create free account| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
CTE vs Temperature(α(T)) | Curve (12 pts) | 1/K | — | ||
Specific Heat vs Temperature(Cp(T)) | Curve (11 pts) | J/(kg·K) | — | ||
Thermal Conductivity vs Temperature(k(T)) | Curve (15 pts) | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 2.768 | kg/m³ | 22°C |