AA 7475 T61: High‑Toughness Aluminum Alloy for Diverse Applications
AA 7475, derived from Aluminum 7075, provides excellent toughness for a broad variety of applications. This alloy offers several metalworking options that include machining, forming, and heat treating. For machining, AA 7475 functions best in the annealed condition and should be used with oil-based lubricants. It is also most easily formed in the annealed condition, as its hardened state results in spring-back. This alloy is typically available in flat rolled products, and it is widely used for applications that require high strength, including planes and other aerospace assemblies.
Properties
General
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Density | 2.81 g/cm³ | T61 | AA Standards |
Mechanical
| Property | Value | Condition | Related Standards | Comment |
|---|---|---|---|---|
Elastic modulus | 70.0 GPa | T61 | AA Standards | |
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 | 565.0 MPa | T61 | AA Standards |
Thermal
| Property | Temperature | Value | Condition | Related Standards | Comment |
|---|---|---|---|---|---|
Coefficient of thermal expansion | 20 °C | 2.3199999999999998e-05 1/K | T61 | AA Standards | |
100 °C | 2.3199999999999998e-05 1/K | T61 | AA Standards | ||
Melting point | 475.0 - 635.0 °C | T61 | AA Standards | ||
Specific heat capacity | 795.0 - 1050.0 J/(kg·K) | Typical for Wrought 7000 Series Aluminium | |||
Thermal conductivity | 138.0 - 163.0 W/(m·K) | T61 | AA Standards |
Electrical
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Electrical conductivity | 20000000.0 - 24000000.0 S/m | T61 | AA Standards |
Electrical resistivity | 4.17e-08 - 5e-08 Ω·m | T61 | AA Standards |
Chemical properties
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Chromium | 0.18 - 0.25 % | T61 | AA Standards |
Copper | 1.2 - 1.9 % | T61 | AA Standards |
Iron | 0.12 % | T61 | AA Standards |
Magnesium | 1.9 - 2.6 % | T61 | AA Standards |
Manganese | 0.06 % | T61 | AA Standards |
Silicon | 0.1 % | T61 | AA Standards |
Titanium | 0.06 % | T61 | AA Standards |
Zinc | 5.2 - 6.2 % | T61 | AA Standards |
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 Standards Grade 7076 T61 – Comprehensive Aluminium 7076 Properties
- AA Standards Grade 2218 T61: Wrought 2000 Series Aluminium Specifications
- AA Standard Grade 6053 T61: Technical Specifications & Material Properties
- 2018 AA T61 Aluminium Grade – Technical Specifications & Mechanical Properties
- AA 6101 T61: High-Performance Aluminum Alloy for Electrical and Structural Applications
- AA Standards Grade 2618 T61 – Comprehensive Aluminium Alloy Specifications
- AA 7475 T651: High-Toughness Aluminum Alloy for Versatile Applications
- AA 7475 (T7351) – High‑Toughness Aluminum Alloy for Advanced Engineering
- AA 7475 T761: High-Performance Aluminum Alloy for Tough Applications
- AA 7475 (T7651) – Premium Aluminum Alloy for High‑Toughness Applications