Alloy 6061 is one of the most widely used alloys in the 6000 Series. In general, 6000 series aluminium alloys are alloyed with magnesium and silicon. The strength of heat treated commercial Al alloys exceeds 550 MPa. Aluminium alloys containing alloying elements with limited solid solubility at room temperature and with a strong temperature dependence of solid solubility (for example Cu) can be strengthened by a suitable thermal treatment ( precipitation hardening). There are also two principal classifications, namely casting alloys and wrought alloys, both of which are further subdivided into the categories heat-treatable and non-heat-treatable.
The different families of alloys and the major alloying elements are:
The aluminium alloys are divided into 9 families (Al1xxx to Al9xxx). Aluminium alloy compositions are registered with The Aluminum Association. Aluminium alloys are based on aluminium, in which the main alloying elements are Cu, Mn, Si, Mg, Mg+Si, Zn.
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