7129 aluminium alloy
Aluminium 7129 alloy is a heat treatable wrought alloy.[1]
Chemical composition
[edit]| Element[1] | Weight Percentage (%) |
|---|---|
| Aluminum | 90.9 - 94 |
| Zinc | 4.2 - 5.2 |
| Magnesium | 1.3 - 2 |
| Copper | 0.50 - 0.90 |
| Iron | ≤ 0.30 |
| Titanium | ≤ 0.050 |
| Vanadium | ≤ 0.050 |
| Gallium | ≤ 0.030 |
| Silicon | ≤ 0.15 |
| Chromium | ≤ 0.10 |
| Manganese | ≤ 0.10 |
| Remainder (each) | ≤ 0.050 |
| Remainder (total) | ≤ 0.15 |
Properties
[edit]| Properties | Metric |
|---|---|
| Density[1] | 2.78 g/cm3 |
| Youngs modulus[2] | 69 GPa |
| Elongation at Break[2] | 9.0 % to 9.1 % |
| Fatigue Strength[2] | 150 to 190 MPa |
| Shear Modulus[2] | 26 GPa |
| Shear Strength[2] | 250 to 260 MPa |
| Tensile Strength: Ultimate (UTS)[2] | 430 MPa |
| Specific Heat Capacity[2] | 880 J/kg-K |
| Thermal Conductivity[2] | 150 W/m-K |
Applications
[edit]- Aircraft manufacturing sector[1]