![]() The most forgeable alloy is 6061 aluminum. The combination of these three alloy additions allows good strength to be achieved after heat treatment. Magnesium (about 1%) in combination with silicon (about 0.75%) and a small amount of copper (0.3%) are used in the 6061 aluminum alloy. It provides strength to the alloy without major loss in ductility. ![]() Magnesium is also the major alloying element in the forging alloy 5083. Magnesium is sometimes added to the 2000 series alloys to enhance the strengthening of the alloy after heat treatment. The forging-alloy grades with copper as the primary addition are 2014, 2025, 22. These fine precipitates can produce a metal with higher strength. ![]() The copper can form an intermetallic compound with aluminum and produce fine precipitates in the forging if it is properly heat treated. Other alloying elements are added to enhance the properties. The major element in aluminum forging alloys is, of course, aluminum. ![]()
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