Alloy comparison
2024-T3 Aluminum vs 7075-T6 Aluminum
aerospace alloy comparison
Side-by-side handbook properties for preliminary material selection. Green values mark the preferable metric for that row (higher strength, lower density, better fabrication rating).
2024-T3 Aluminum
2xxx · ASTM B209 / EN AW-2024
High-strength copper alloy widely used in aerospace. Density is ~2.78 g/cm³ — about 3% heavier than the generic 2.70 assumption.
Density
2.78 g/cm³
Yield
325 MPa
7075-T6 Aluminum
7xxx · ASTM B209 / EN AW-7075
Very high strength zinc alloy. Density ~2.81 g/cm³ — a 2.70 assumption underestimates weight by ~4%. Do not weld for structural joints.
Density
2.81 g/cm³
Yield
505 MPa
| Property | 2024-T3 Aluminum | 7075-T6 Aluminum |
|---|---|---|
| Density | 2.78 g/cm³ | 2.81 g/cm³ |
| Error if using 2.70 | +3.0% | +4.1% |
| Yield strength | 325 MPa | 505 MPa |
| Tensile strength | 470 MPa | 570 MPa |
| Elongation | 20% | 11% |
| Modulus E | 73 GPa | 72 GPa |
| Weldability | Poor | Poor |
| Machinability | Good | Fair |
| Corrosion | Fair | Fair |
| 1 m² × 10 mm plate | 27.80 kg | 28.10 kg |
Quick selection guide
- Choose 2024-T3 Aluminum when you prioritize aerospace structure and aircraft skins, and you can avoid welding.
- Choose 7075-T6 Aluminum when you prioritize aerospace fittings and high-stress tooling (higher yield: 505 vs 325 MPa).
- Weight difference on a 1 m² × 10 mm plate: 0.30 kg (2024-T3 Aluminum is lighter).