7049/7149 Aluminum T7751 is a high-strength Al-Zn-Mg-Cu alloy in an overaged temper condition that provides enhanced stress-corrosion cracking (SCC) resistance and fracture toughness compared to T73 variants, with typical yield strengths of 435–450 MPa and primary use in critical aerospace structural applications requiring damage tolerance and saltwater/corrosive environment resistance.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Modulus(Ec) | 10,600 | ksi | 22°C · Hand forging | ||
Poisson's Ratio(ν) | 0.3300 | - | 22°C | ||
Shear Modulus(G) | 3,900 | ksi | 22°C · Die forging | ||
Young's Modulus(E) | 10,200 | ksi | 22°C · Die forging |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.1030 | lb/in³ | 22°C |