Aluminum 6061 (Al 6061)
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Basic Properties
| Alloy Type | |
|---|---|
| Designation | Al 6061 |
| Density | 2.7 g/cm³ |
| Melting Point | 582-652°C |
Composition
| Element | Percentage |
|---|
Description
A versatile heat-treatable aluminum alloy with good mechanical properties
| Density | 2.7 g/cm³ |
|---|---|
| Electrical Resistivity | 4.0 μΩ·cm |
| Tensile Strength | 124-290 MPa |
|---|---|
| Yield Strength | 55-276 MPa |
| Elongation | 8-25% |
| Hardness | 30-95 HB |
| Machinability | Excellent machinability. Free-cutting grade available (6061-T651). Good surface finish achievable. |
| Melting Point | 582-652°C |
|---|---|
| Thermal Conductivity | 167 W/(m·K) |
| Thermal Expansion | 23.6 × 10⁻⁶/°C |
| Heat Treatment | Solution heat treatment at 529°C, water quench, artificial aging at 160°C for 8-12 hours (T6 temper) |
| Heat Treatment | Solution heat treatment at 529°C, water quench, artificial aging at 160°C for 8-12 hours (T6 temper) |
|---|---|
| Corrosion Resistance | Excellent corrosion resistance in atmospheric conditions. Good resistance to seawater. Susceptible to stress corrosion in some environments. |
Applications
Structural components, automotive parts, aircraft fittings, marine equipment, bicycle frames, architectural extrusions, electrical fittings
History
Developed in 1935. Became widely used during WWII for aircraft applications. Now most popular aluminum alloy.