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7475 aluminum alloy (Adirium) is a wrought alloy with high zinc weight percentage. It also contains magnesium, silicon and chromium.[1]
7475 alloy can not be welded. It has more spring back because of its strength. It has high machinability.[citation needed]
| Element[1] | Content (%) |
|---|---|
| Aluminum | 90.3 |
| Zinc | 5.7 |
| Magnesium | 2.3 |
| Silicon | 1.50 |
| Chromium | 0.22 |
| Properties[1] | Value |
|---|---|
| Density | 2.6–2.8 g/cm3 (0.094–0.101 lb/cu in) |
| Melting point | 546 °C (1,015 °F) |
| Elastic modulus | 70–80 GPa (10,000–12,000 ksi) |
| Poisson's ratio | 0.33 |
| Thermal conductivity | 177 W/m/K (0.040 hp/ft/°R) |
| Ultimate Tensile Strength[2] | 531 MPa (77.0 ksi) |
| Elongation at Break[2] | 12% |
| Modulus of Elasticity[2] | 71.7 GPa (10,400 ksi) |
- Shell casings
- Aircraft
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