7249 Aluminum T61511 is a high-strength Al-Zn-Mg-Cu alloy in a precipitation-hardened condition (T61511 involves solution treatment, controlled stretching, and artificial aging) designed for aerospace structural applications requiring exceptional fracture toughness and damage tolerance. This temper provides superior resistance to stress-corrosion cracking and fatigue crack propagation compared to peak-hardness conditions, making it suitable for critical airframe components and pressure vessels operating at service temperatures up to approximately 120°C.
Compliance & Regulations
1 interactive curve 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 | |
|---|---|---|---|---|---|
Compressive Modulus(Ec) | 71.71 | GPa | 22°C · Hand forging | ||
Poisson's Ratio(ν) | 0.3300 | - | 22°C | ||
Shear Modulus(G) | 26.20 | GPa | 22°C · Hand forging | ||
Stress–Strain Curve (buckling region, ≤ 2% strain)(σ–ε (low-strain)) | Curve (18 pts) | Pa | 21°C · LT | ||
Young's Modulus(E) | 69.64 | GPa | 22°C · Hand forging |