This alloy is an aluminum-based alloy in the "commercially pure" wrought family. With a minimum of 99.0% aluminum, it is the most heavily alloyed of the 1000 series. It is also the mechanically strongest alloy in the series, and is the only 1000-series alloy commonly used in rivets. At the same time, it keeps the benefits of being relatively lightly alloyed (compared to other series), such as high electrical conductivity, corrosion resistance, and workability. It can be strengthened by cold working, but not by heat treatment. HVAC, condenser, radiator, evaporator, heat shield, deep drawn applications, spinning, fan blades, nameplates and sheet metal work are typical applications.