AA 2024 T851 Aluminum Alloy – Superior Strength for Aerospace Applications
Aluminum AA 2024, known for its use in aircraft industry, is an alloy that offers excellent strength. When in the annealed condition it is readily formed and has good machinability. Though it has a relatively low level of corrosion resistance, it can be machined to a high finish.
Properties
General
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Density | 2.78 g/cm³ | T851 | AA Standards, ASTM B209, ASTM B211 |
Mechanical
| Property | Value | Condition | Related Standards | Comment |
|---|---|---|---|---|
Elastic modulus | 73.0 GPa | T851 | AA Standards, ASTM B209, ASTM B211 | |
Plane-Strain Fracture Toughnes | 22.0 - 35.0 MPa·√m | Typical for Wrought 2000 Series Aluminium | ||
Poisson's ratio | 0.33 [-] | Typical for Wrought 2000 Series Aluminium | ||
Shear modulus | 26.0 - 27.5 GPa | Typical for Wrought 2000 Series Aluminium | ||
Tensile strength | 455.0 MPa | T851 | AA Standards, ASTM B209, ASTM B211 | |
460.0 MPa | T851 | AA Standards, ASTM B209 |
Thermal
| Property | Temperature | Value | Condition | Related Standards | Comment |
|---|---|---|---|---|---|
Coefficient of thermal expansion | 20 °C | 2.3199999999999998e-05 1/K | T851 | AA Standards, ASTM B209, ASTM B211 | |
100 °C | 2.3199999999999998e-05 1/K | T851 | AA Standards, ASTM B209, ASTM B211 | ||
Melting point | 505.0 - 635.0 °C | T851 | AA Standards, ASTM B209, ASTM B211 | ||
Specific heat capacity | 816.0 - 963.0 J/(kg·K) | Typical for Wrought 2000 Series Aluminium | |||
Thermal conductivity | 121.0 - 193.0 W/(m·K) | T851 | AA Standards, ASTM B209, ASTM B211 |
Electrical
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Electrical conductivity | 17000000.0 - 29000000.0 S/m | T851 | AA Standards, ASTM B209, ASTM B211 |
Electrical resistivity | 3.45e-08 - 5.88e-08 Ω·m | T851 | AA Standards, ASTM B209, ASTM B211 |
Chemical properties
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Chromium | 0.1 % | T851 | AA Standards, ASTM B209, ASTM B211 |
Copper | 3.8 - 4.9 % | T851 | AA Standards, ASTM B209, ASTM B211 |
Iron | 0.50 % | T851 | AA Standards, ASTM B209, ASTM B211 |
Magnesium | 1.2 - 1.8 % | T851 | AA Standards, ASTM B209, ASTM B211 |
Manganese | 0.3 - 0.9 % | T851 | AA Standards, ASTM B209, ASTM B211 |
Silicon | 0.5 % | T851 | AA Standards, ASTM B209, ASTM B211 |
Titanium | 0.15 % | T851 | AA Standards, ASTM B209, ASTM B211 |
Zinc | 0.25 % | T851 | AA Standards, ASTM B209, ASTM B211 |
Technological properties
| Property | ||
|---|---|---|
| Brazing | general: no brazing is known or developed | |
| Corrosion properties | Stress corrosion cracking: Betriebsschäden in Gebieten mit Zugspannungen quer zur Kornstruktur, Eingeschränkte Schäden an Laborproben (T4,T3, T351, T3510, T3511), d (T6, T861, T81, T851, T8510, T8511), general: sufficient, in principle it should be protected | |
| General machinability | General: poor (O), good to acceptable | |
| Workability | general (condition): poor(T4, T3, T351, T3510, T3511, T6), not suitable (T361, T861, T81, T851, T8510, T8511) | |
Metal
- AA Standards Grade 2124 T851: Key Mechanical Properties and Specifications
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