6060 aluminium alloy

6060 aluminium alloy is an alloy in the wrought aluminium-magnesium-silicon family (6000 or 6xxx series). It is much more closely related to the alloy 6063 than to 6061. The main difference between 6060 and 6063 is that 6063 has a slightly higher magnesium content. It can be formed by extrusion, forging or rolling, but as a wrought alloy it is not used in casting. It cannot be work hardened, but is commonly heat treated to produce tempers with a higher strength but lower ductility.^[1]

Alternate names and designations include AlMgSi, 3.3206, and A96060. The alloy and its various tempers are covered by the following standards:^[2]

• ASTM B 221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
• EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products
• EN 754-2: Aluminium and aluminium alloys. Cold drawn rod/bar and tube. Mechanical properties
• EN 755-2: Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties
• ISO 6361: Wrought Aluminium and Aluminium Alloy Sheets, Strips and Plates

Chemical composition

The alloy composition of 6060 aluminium is:^[2]

• Aluminium: 97.9 to 99.3%
• Chromium: 0.05% max
• Copper: 0.1% max
• Iron: 0.1 to 0.3%
• Magnesium: 0.35 to 0.6%
• Manganese: 0.10%
• Silicon: 0.3 to 0.6%
• Titanium: 0.1% max
• Zinc: 0.15% max
• Residuals: 0.15% max

Properties

Typical material properties for 6060 aluminum alloy include:^[2]

• Density: 2.70 g/cm³, or 169 lb/ft³.
• Young's modulus: 70 GPa, or 10 Msi.
• Ultimate tensile strength: 140 to 230 MPa, or 20 to 33 ksi.
• Yield strength: 70 to 180 MPa, or 10 to 26 ksi.
• Thermal Expansion: 23.4 μm/m-K.
• Solidus: 610 °C or 1130 °F.

References

1. Marks' Standard Handbook for Mechanical Engineers, 8th Ed., McGraw Hill, pp. 6-50 to 6-56
2. 6060 (AlMgSi, 3.3206, A96060) Aluminum. Retrieved on 2014-12-29.