7075 Aluminum Alloy Properties, AA 7075-T6, T7351, T651, Density, Composition, Yield Strength
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Family: Aluminum Alloy
Performance Ratings
Performance Radar
Composition
Mechanical Properties
| Tensile Strength | 12.5 MPa |
| Hardness (Rockwell) |
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Al | Remainder |
| Cr | 0.18-0.28 |
| Cu | 1.2-2.0 |
| Mg | 2.1-2.9 |
| Si | 0.40 |
| Fe, ≤ | 0.50 |
| Mn, ≤ | 0.30 |
| Ti, ≤ | 0.20 |
| Zn, ≤ | 5.1-6.1 |
| AISI (UNS) | 7075 (UNS A97075) |
| Designation | 7075 |
| ANSI Alloy (UNS) | 7075 (UNS A97075) |
| Numerical (Chemical symbols) | EN AW-7075 (EN AW-AlZn5,5MgCu) |
| Designation (Material number) | AlZnMgCu1,5 (3.4365) |
| Other Elements, Each (Total), ≤ | 0.05 (0.15) |
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Description
7075 aluminum alloy is a high-strength, heat-treatable wrought alloy developed by Alcoa in 1943. The alloy contains zinc, magnesium, chromium and copper as hardeners, as well as small amounts of iron, silicon, manganese and titanium. Al-7075 is much stronger than carbon steel after heat treatment. The tempered design include aluminum 7075-T6, T651, T7351, T73, T76, T7651, O, W, W51, etc. Aluminum 7075 responds to age hardening heat treatment, resulting in extremely high mechanical properties. However, this alloy exhibits a certain degree of notch sensitivity. Material 7075 shows good formability in annealed and solution heat treated conditions at ambient temperature and in 7075-T6 conditions at elevated temperatures. The 7075 alloy has good machinability in the annealed condition, little or no warping occurs during the age-hardening process. Its corrosion resistance is good and is further improved by heat treatment and aging. The alloy resists stress corrosion cracking in the 7075-T73 temper. Al-7075 can be resistance welded, but fusion welding is not generally recommended.