6005A aluminium alloy
6005A aluminium alloy is an alloy in the wrought aluminium-magnesium-silicon family. It is closely related, but not identical, to 6005 aluminium alloy. Between those two alloys, 6005A is more heavily alloyed, but the difference does not make a marked impact on material properties. 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 at the expense of ductility.
Alternate names and designations include AlSiMg and 3.3210. The alloy and its various tempers are covered by the following standards:
- 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 755-2: Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties
Chemical composition
The alloy composition of 6005A aluminium is:- Aluminium: 96.5 to 99.0%
- Chromium: 0.3% max
- Copper: 0.3% max
- Iron: 0.35% max
- Magnesium: 0.4 to 0.7%
- Manganese: 0.5% max
- Silicon: 0.5 to 0.9%
- Titanium: 0.1% max
- Zinc: 0.2% max
- Residuals: 0.15% max
Properties
Typical material properties for 6005A aluminum alloy include:- Density: 2.71 g/cm3, or 169 lb/ft3.
- Electrical Conductivity: 47 to 50% IACS.
- Young's modulus: 70 GPa, or 10 Msi.
- Ultimate tensile strength: 190 to 300 MPa, or 28 to 44 ksi.
- Yield strength: 100 to 260 MPa, or 15 to 38 ksi.
- Thermal Conductivity: 180 to 190 W/m-K.
- Thermal Expansion: 23.3 μm/m-K.