6061 Aluminum — Properties & Applications
The go-to structural aluminum — strong, weldable, machinable.
Density
0.098 lb/in³
Yield Strength
40 ksi*
Tensile Strength
45 ksi*
Machinability
Good
Weldability
Excellent
About 6061 Aluminum
Most versatile aluminum alloy. Good strength, excellent weldability, and corrosion resistance.
Why Choose 6061?
6061 is the most widely used structural aluminum for good reason: it welds cleanly with standard TIG/MIG processes, machines well with carbide tooling, resists corrosion without coating, and meets virtually every structural specification. It's the default choice when you need reliable performance across multiple properties.
Applications
Structural frames, mounting brackets, CNC jig fixtures, aerospace secondary structures, truck frames, marine fittings, bicycle frames, architectural extrusions, tooling plates
Mechanical Properties
| Property | Value | Unit |
|---|---|---|
| Yield Strength | 40* | ksi |
| Tensile Strength | 45* | ksi |
| Elongation | 12* | % |
| Hardness | 65 HRB* | |
| Machinability | Good | |
| Weldability | Excellent | |
| Corrosion Resistance | Good | |
| Formability | Good |
Chemical Composition
| Element | Percentage |
|---|---|
| Al | Balance |
| Mg | 0.8–1.2 |
| Si | 0.4–0.8 |
| Cu | 0.15–0.40 |
| Cr | 0.04–0.35 |
| Fe | 0.7 max |
| Mn | 0.15 max |
| Zn | 0.25 max |
| Ti | 0.15 max |
Applicable Specifications
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