Aluminum 7050
Aluminum 7050 – Thick-Section Aerospace Alloy with Superior SCC Resistance
Aluminum 7050 is a premium 7xxx-series alloy engineered specifically for thick-section aerospace structural components. It offers superior resistance to stress corrosion cracking (SCC) compared to 7075, making it the preferred choice for bulkheads, wing spars, and fuselage frames machined from heavy plate stock.
Key Properties
- Tensile Strength: 524 MPa
- Yield Strength: 469 MPa
- Density: 2.83 g/cm³
- Hardness: 140 HB
- SCC Resistance: Superior vs 7075
- Temper: T7451 (stress-relieved plate)
Common Applications
Commercial and military aircraft bulkheads, wing spars, fuselage frames, and other thick-section primary structural members. Certified to AMS 4050 / AMS 2770.
Material properties
| Material name | Aluminum 7050 |
|---|---|
| Type | Aluminum |
| Standard code | AMS 4050 / AMS 2770 |
| Tensile strength (MPa) | 524 |
| Yield strength (MPa) | 469 |
| Fatigue strength (MPa) | 159 |
| Elongation (%) | 11 |
| Hardness (Brinell) | 140 |
| Density (g/cm³) | 2.83 |
| Electrical resistivity (µΩ·in) | 5.5 |
| Thermal conductivity (W/m·K) | 157 |
| Melting range (°C) | 488–635 |
| Weldability | Poor |
| Formability | Fair |
| Shear modulus | 26.9 |
| Industry code | aluminum_7050 |