Aluminum Alloy is commonly grouped into specific series, and each series has different properties. Alloys in the 2xxx series are tough and have high strength-to-weight ratios. These alloys can also contain up to 15% copper. These alloys are often painted and are commonly used for appliances and fasteners.
These alloys have medium to high strength and are heat treatable. They also exhibit good machinability, forming, weldability, and corrosion resistance. These alloys are especially useful for parts that need high strength-to-weight ratios, such as the wheels of trucks and planes. They can withstand temperatures up to 150 oC, making them excellent choices for these applications. They are also a good choice for structural applications.
The strength of 7xxx alloys depends on the formation of matrix precipitates during ageing treatment. Their formation has been extensively studied. Optimization frameworks have been used to identify alloys with good ageing strengthening properties. For instance, cast alloy 4-3 exhibits a UTS of 562 MPa, which is comparable to the strength of some commercial 7xxx alloys.