6005A aluminum alloy is an alloy in the wrought aluminum magnesium silicon series (6000 or 6xxx series). It is closely related to 6005 aluminum alloy, but not identical. Between the two alloys, 6005A has a higher alloy content, but the difference does not have a significant effect on the material properties. It can be formed by extrusion, forging or rolling, but as a wrought alloy, it is not used for casting. It cannot be work hardened but is usually heat treated to produce a higher strength temper at the expense of ductility https://www.jcmetalchina.com/aluminum/6005a-aluminum-sheet/