7075 Aluminum T651X
metal7075 Aluminum T651X is a precipitation-hardened aluminum-zinc-magnesium-copper alloy in the T651X condition, offering the highest strength-to-weight ratio of wrought aluminum alloys with tensile strengths typically 70–78 ksi, suitable for critical aircraft structural components, fasteners, and aerospace applications requiring fatigue resistance. The T651X condition (solution heat-treated, artificially aged, and stress-relieved by stretching) provides dimensional stability, reduced residual stress, and improved fracture toughness compared to T6, with operating capability up to approximately 250°F, though notch sensitivity and stress-corrosion cracking susceptibility require careful design and protective measures in marine or chloride-bearing environments.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Modulus(Ec) | — | ksi | 22°C · Bar/Rod | — | |
Compressive Tangent Modulus vs Stress(Etn(σ))2 entries | Curve (12 pts) | ksi | 21°C · L | — | |
| ↳ | Curve (14 pts) | ksi | 21°C · LT | — | |
Poisson's Ratio(ν) | — | - | 22°C | — | |
Shear Modulus(G) | — | ksi | 22°C · Bar/Rod | — | |
Stress–Strain Curve(σ–ε)2 entries | Curve (14 pts) | ksi | 21°C · L | — | |
| ↳ | Curve (14 pts) | ksi | 21°C · LT | — | |
Stress–Strain Curve (buckling region, ≤ 2% strain)(σ–ε (low-strain))4 entries | Curve (10 pts) | ksi | 21°C · L | — | |
| ↳ | Curve (12 pts) | ksi | 21°C · L | — | |
| ↳ | Curve (10 pts) | ksi | 21°C · LT | — | |
| ↳ | Curve (11 pts) | ksi | 21°C · LT | — | |
Young's Modulus(E) | — | ksi | 22°C · Bar/Rod | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
CTE vs Temperature(α(T)) | Curve (5 pts) | µin/in·°F | — | — | |
Specific Heat vs Temperature(Cp(T)) | Curve (5 pts) | BTU/(lb·°F) | — | — | |
Thermal Conductivity vs Temperature(k(T)) | Curve (4 pts) | BTU/(hr·ft·°F) | — | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | — | lb/in³ | 22°C | — |