Aluminium 7116 alloy is heat treatable wrought alloy.[1] It has 4.2 to 5.2 weight percentage of Zinc. It also contains magnesium, copper as small additions.
| Element | Weight Percentage (%) | |
|---|---|---|
| Aluminum | 91.5 - 94.5 | |
| Zinc | 4.2 - 5.2 | |
| Magnesium | 0.80 - 1.4 | |
| Copper | 0.50 - 1.1 | |
| Iron | ≤ 0.30 | |
| Silicon | ≤ 0.15 | |
| Titanium | ≤ 0.050 | |
| Vanadium | ≤ 0.050 | |
| Manganese | ≤ 0.050 | |
| Gallium | ≤ 0.030 | |
| Other (each) | ≤ 0.050 | |
| Other (total) | ≤ 0.15 |
| Properties | Metric | |
|---|---|---|
| Density | 2.78 g/cm3 | |
| Young's Modulus[2] | 69 MPa | |
| Elongation at Break | 7.8% | |
| Fatigue Strength | 160 MPa | |
| Poisson's Ratio | 0.33 | |
| Ultimate Tensile Strength | 370 MPa | |
| Yield Strength | 330 MPa | |
| Specific Heat Capacity | 880 J/kg-K | |
| Thermal Conductivity | 150 W/m-K |
Its application is in the aviation industry