Aluminum 7075-T6 is a precipitation-hardened aluminum alloy strengthened by copper, magnesium, and zinc additions, representing the highest-strength aluminum alloy commonly available in industry. It is the workhorse material for weight-critical, high-performance structures where exceptional strength-to-weight ratio is essential—notably in aircraft fuselage and wing components, aerospace fasteners, and defense systems. Engineers select 7075-T6 when competing materials like 6061 or 2024 cannot meet load requirements without excessive weight penalty, though careful design is needed because its lower fracture toughness makes it more sensitive to fatigue and stress concentration than some alternatives.
Compliance & Regulations
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 | |
|---|---|---|---|---|---|
Fracture Toughness(KIC) | 21.84 | ksi·√in | — | — | |
Hardness (Vickers)(HV) | 175 | HV | — | — | |
Poisson's Ratio(ν) | 0.3300 | - | — | — | |
S–N Curve (Wöhler)(S–N) | Curve (11 pts) | ksi | 20°C | ||
Stress–Strain Curve(σ–ε) | Curve (11 pts) | ksi | 20°C | ||
Yield Strength (0.2% offset)(σy)4 entries | 67.01 | ksi | 150°C | ||
| ↳ | 47.86 | ksi | 200°C | ||
| ↳ | 15.95 | ksi | 250°C | ||
| ↳ | 72.95 | ksi | T6 | — | |
Young's Modulus(E) | 10,399.2 | ksi | — | — | |
Young's Modulus vs Temperature(E(T)) | Curve (6 pts) | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Specific Heat Capacity(Cp) | 0.2293 | BTU/(lb·°F) | — | — | |
Thermal Conductivity(k)2 entries | 75.11 | BTU/(hr·ft·°F) | 20°C | ||
| ↳ | 75.11 | BTU/(hr·ft·°F) | — | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.1015 | lb/in³ | — | — |