2024-T81 aluminum is a high-strength aluminum-copper alloy in drawn tube form, developed for aerospace applications requiring elevated strength with controlled properties. The T81 temper—achieved through solution heat treatment, controlled stretching, and natural aging—delivers ultimate tensile strength around 70 ksi with good dimensional stability suitable for structural tubing in aircraft fuselage and hydraulic systems per WW-T-700/3 specification.
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74 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 | 5 entriesClick to expand | ||
Compressive Modulus(Ec) | 73.77 | GPa | 22°C · Drawn tubing | ||
Compressive Tangent Modulus vs Stress(Etn(σ)) | — | Pa | 11 entriesClick to expand | ||
Compressive Yield Strength(Fcy) | — | Pa | 5 entriesClick to expand | ||
Elongation at Break(εf) | — | - | 10 entriesClick to expand | ||
Poisson's Ratio(ν) | 0.3300 | - | 22°C | ||
Shear Modulus(G) | 27.58 | GPa | 22°C · Drawn tubing | ||
Ultimate Shear Strength(Fsu)3 entries | Curve (6 pts) | Pa | — | ||
| ↳ | Curve (7 pts) | Pa | — | ||
| ↳ | Curve (7 pts) | Pa | — | ||
Stress–Strain Curve(σ–ε)4 entries | Curve (10 pts) | Pa | 21°C · L | ||
| ↳ | Curve (11 pts) | Pa | 21°C · LT | ||
| ↳ | Curve (11 pts) | Pa | 21°C · L | ||
| ↳ | Curve (11 pts) | Pa | 21°C · LT | ||
Stress–Strain Curve (buckling region, ≤ 2% strain)(σ–ε (low-strain)) | — | Pa | 11 entriesClick to expand | ||
Ultimate Tensile Strength(σUTS) | 455.1 | MPa | 11 entriesClick to expand | ||
Yield Strength (0.2% offset)(σy) | 399.9 | MPa | 11 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 |