AA 7050 T7452 – High‑Strength, Heat‑Treatable Aluminium Alloy for Aerospace
AA 7050 is a heat treatable alloy that has very high mechanical properties and high fracture toughness. Popular with the aerospace industry, AA 7050 offers good stress and corrosion cracking resistance and high strength at subzero temperatures.
Properties
General
| Property | Value | Comment |
|---|---|---|
Density | 2.7 - 2.85 g/cm³ | Typical for Wrought 7000 Series Aluminium |
Mechanical
| Property | Value | Condition | Related Standards | Comment |
|---|---|---|---|---|
Elastic modulus | 69.0 - 72.0 GPa | Typical for Wrought 7000 Series Aluminium | ||
Plane-Strain Fracture Toughnes | 22.0 - 35.0 MPa·√m | Typical for Wrought 7000 Series Aluminium | ||
Poisson's ratio | 0.33 [-] | Typical for Wrought 7000 Series Aluminium | ||
Shear modulus | 26.4 - 27.1 GPa | Typical for Wrought 7000 Series Aluminium | ||
Tensile strength | 440.0 MPa | T7452 | AA Standards, ASTM B247 | |
450.0 MPa | T7452 | AA Standards, ASTM B247 | ||
455.0 MPa | T7452 | AA Standards, ASTM B247 | ||
460.0 MPa | T7452 | AA Standards, ASTM B247 | ||
470.0 MPa | T7452 | AA Standards, ASTM B247 | ||
475.0 MPa | T7452 | AA Standards, ASTM B247 | ||
485.0 MPa | T7452 | AA Standards, ASTM B247 | ||
490.0 MPa | T7452 | AA Standards, ASTM B247 | ||
495.0 MPa | T7452 | AA Standards, ASTM B247 |
Thermal
| Property | Value | Comment |
|---|---|---|
Coefficient of thermal expansion | 2.1e-05 - 2.4e-05 1/K | Typical for Wrought 7000 Series Aluminium |
Melting point | 465.0 - 655.0 °C | Typical for Wrought 7000 Series Aluminium |
Specific heat capacity | 795.0 - 1050.0 J/(kg·K) | Typical for Wrought 7000 Series Aluminium |
Thermal conductivity | 121.0 - 170.0 W/(m·K) | Typical for Wrought 7000 Series Aluminium |
Electrical
| Property | Value | Comment |
|---|---|---|
Electrical conductivity | 18000000.0 - 34000000.0 S/m | Typical for Wrought 7000 Series Aluminium |
Electrical resistivity | 2.9e-08 - 5.6e-08 Ω·m | Typical for Wrought 7000 Series Aluminium |
Chemical properties
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Chromium | 0.04 % | T7452 | AA Standards, ASTM B247 |
Copper | 2.0 - 2.6 % | T7452 | AA Standards, ASTM B247 |
Iron | 0.15 % | T7452 | AA Standards, ASTM B247 |
Magnesium | 1.9 - 2.6 % | T7452 | AA Standards, ASTM B247 |
Manganese | 0.1 % | T7452 | AA Standards, ASTM B247 |
Silicon | 0.12 % | T7452 | AA Standards, ASTM B247 |
Titanium | 0.06 % | T7452 | AA Standards, ASTM B247 |
Zinc | 5.7 - 6.7 % | T7452 | AA Standards, ASTM B247 |
Zirconium | 0.08 - 0.15 % | T7452 | AA Standards, ASTM B247 |
Technological properties
| Property | ||
|---|---|---|
| Brazing | general: no brazing is known or developed | |
| Corrosion properties | Stress corrosion cracking: Operational damage in areas with tensile stresses transverse to the grain structure, limited damage to laboratory samples, general: good, without protection in industrial or seawater atmosphere | |
| General machinability | General: good to acceptable | |
| Workability | general (condition): not suitable | |
Metal
- AA Standard Grade 7279: Key Material Properties & Specifications
- AA Standard Grade 7097 – 7000 Series Aluminium Properties
- AA Standards Grade 7104: Specifications & Properties for 7000 Series Aluminium
- AA Standard Grade 7106 – Key Material Specifications
- AA 7050 H13: High-Strength, Heat-Treatable Aluminium for Aerospace Applications
- AA 7050-O: High-Strength, Heat‑Treatable Aluminium Alloy for Aerospace
- AA 7050 T7451: High‑Performance Heat‑Treatable Aluminium Alloy
- AA 7050 Heat-Treatable Alloy (T74510) – High Strength & Corrosion Resistance
- AA 7050 T74511 – High‑Strength Heat‑Treatable Aluminium for Aerospace
- AA 7050 T7651: Premium 7000‑Series Aluminum Alloy for Aerospace and High‑Strength Applications