7075 vs 6061 Aluminum: Which Alloy Should You Choose?
The choice between 7075 and 6061 aluminum alloys can significantly impact your project’s performance and cost. As a leading custom aluminum extrusion manufacturer, YUANZHONG examines their mechanical properties to help you make the right selection.
Fundamental Differences at a Glance
| Property | 7075 Aluminum | 6061 Aluminum |
|---|---|---|
| Main Alloy Element | Zinc (5.6%) | Magnesium & Silicon |
| Tensile Strength (T6) | 83,000 psi | 45,000 psi |
| Corrosion Resistance | Fair | Excellent |
| Machinability | Good | Very Good |
Mechanical Properties & Machining
7075 is the “super-strength” alloy of the aluminum world. It is ideal for high-stress aerospace components.
However, for parts requiring complex geometries, our precision CNC machining service often recommends 6061 due to its superior surface finish and ease of fabrication.
Surface Treatment Requirements
While 6061 has natural corrosion resistance, 7075 often requires professional surface finishing such as hard-coat anodizing to perform in harsh environments.
Need an Expert Material Recommendation?
Upload your 3D drawings for a free DFM analysis and material cost comparison.