7075 Aluminum — Properties & Applications
Aerospace-grade strength — the strongest aluminum you can buy.
Density
0.101 lb/in³
Yield Strength
73 ksi*
Tensile Strength
83 ksi*
Machinability
Good
Weldability
Not Recommended
About 7075 Aluminum
Highest strength aluminum alloy. Aerospace-grade with excellent machinability.
Why Choose 7075?
7075 delivers a strength-to-weight ratio that rivals many steels. It machines beautifully with excellent chip formation and surface finish. The trade-off: it cannot be welded (use mechanical fasteners) and requires anodizing or primer for corrosion protection in exposed environments.
Applications
Aircraft wing spars, landing gear components, rock climbing equipment, bicycle frames, firearm receivers, high-stress structural fittings, mold and die components
Mechanical Properties
| Property | Value | Unit |
|---|---|---|
| Yield Strength | 73* | ksi |
| Tensile Strength | 83* | ksi |
| Elongation | 11* | % |
| Hardness | 87 HRB* | |
| Machinability | Good | |
| Weldability | Not Recommended | |
| Corrosion Resistance | Fair | |
| Formability | Poor |
Chemical Composition
| Element | Percentage |
|---|---|
| Al | Balance |
| Zn | 5.1–6.1 |
| Mg | 2.1–2.9 |
| Cu | 1.2–2.0 |
| Cr | 0.18–0.28 |
| Fe | 0.50 max |
| Si | 0.40 max |
| Mn | 0.30 max |
| Ti | 0.20 max |
Applicable Specifications
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