Aluminum 7075
Material Data Sheet
With zinc as it’s primary alloying element, it is exceptionally strong. A member of the 7000 series, it is one of the strongest alloys available and is comparable to many types of steel. Although it has high strength, it has lower corrosion resistance than other common aluminum alloys and does not offer the same levels of machinability or weldability.
Due to its high strength, it is often used in applications where it will come under high stress such as aircraft wing spar and ground support equipment.
Characteristic Appraisal
| Characteristic | Rating |
|---|---|
| Strength | Excellent |
| Corrosion Resistance | Average |
| Weldability & Brazability | Poor |
| Workability | Poor |
| Machinability | Fair |
Chemical Composition
| Element | Content(%) |
|---|---|
| Aluminum, Al | 93.50 |
| Copper, Cu | 4.4 |
| Magnesium, Mg | 1.5 |
| Manganese, Mn | 0.6 |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 2.77 g/cm3 | 0.10007 lbs/in3 |
| Melting Point | 510°C | 950°F |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 120 | 120 |
| Hardness, Knoop | 150 | 150 |
| Hardness, Rockwell A | 46.8 | 46.8 |
| Hardness, Rockwell B | 75 | 75 |
| Hardness, Vickers | 137 | 137 |
| Tensile Strength, Ultimate | 469 MPa | 68000 psi |
| Tensile Strength, Yield | 324 MPa | 47000 psi |
| Elongation at Break | 20% | 20% |
| Modulus of Elasticity | 73.1 GPa | 10600 ksi |
| Poisson’s Ratio | 0.33 | 0.33 |
| Fatigue Strength | 138 MPa | 20000 psi |
| Shear Modulus | 28 GPa | 4060 ksi |
Thermal Properties
| Properties | Metric | Imperial |
|---|---|---|
| CTE, linear 68°F | 23.2 µm/m-°C | 12.9 µin/in-°F |
| Specific Heat Capacity | 0.875 J/g-°C | 930 BTU-in/hr-ft²-°F |
| Thermal Conductivity | 121 W/m-K | 840 BTU-in/hr-ft²-°F |
Applications
Aluminum 2024 is used in the following application areas:
- Aircraft fittings
- Gears and shafts
- Bolts
- Fuse parts
- Hydraulic valve bodies
- Missile parts
- Munitions
- Worm gears
- Fastening devices
- Veterinary and Orthopedic equipment
Key Words:Aluminum 2024-T351; AA2024-T351, Aluminum 2024-T4; UNS A92024; ISO AlCu4Mg1; NF A-U4G1 (France); DIN AlCuMg2; AA2024-T4, ASME SB211; CSA CG42 (Canada)
