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Aluminium alloy
        Aluminium alloys are alloys in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon and zinc. There are two principal classifications, namely casting alloys and wrought alloys, both of which are further subdivided into the categories heat-treatable and non-heat-treatable. About 85% of aluminium is used for wrought products, for example rolled plate, foils and extrusions. Cast aluminium alloys yield cost effective products due to the low melting point, although they generally have lower tensile strengths than wrought alloys. The most important cast aluminium alloy system is Al-Si, where the high levels of silicon (4.0% to 13%) contribute to give good casting characteristics. Aluminium alloys are widely used in engineering structures and components where light weight or corrosion resistance is required.
        Aluminium alloy compositions are registered with The Aluminum Association. Many organizations publish more specific standards for the manufacture of aluminium alloy, including the Society of Automotive Engineers standards organization, specifically its aerospace standards subgroups,and ASTM International.
Wrought aluminium alloy composition limits (% weight)
Alloy Si Fe   Cu   Mn   Mg   Cr   Zn   V   Ti Bi Ga Pb Zr Limits†† Al
Each Total
1050 0.25 0.40 0.05 0.05 0.05     0.05           0.03   99.5 min
1060 0.25 0.35 0.05 0.03 0.03 0.03 0.05 0.05 0.03 0.03 0.03 0.03 0.03 0.03   99.6 min
1100 0.95 Si+Fe 0.05–0.20 0.05     0.10             0.05 0.15 99.0 min
2014 0.50–1.2 0.7 3.9–5.0 0.40–1.2 0.20–0.8 0.10 0.25   0.15         0.05 0.15 remainder
2024 0.50 0.50 3.8–4.9 0.30–0.9 1.2–1.8 0.10 0.25   0.15         0.05 0.15 remainder
5052 0.25 0.40 0.10 0.10 2.2–2.8 0.15–0.35 0.10             0.05 0.15 remainder
5083 0.40 0.40 0.10 0.40–1.0 4.0–4.9 0.05–0.25 0.25   0.15         0.05 0.15 remainder
5086 0.40 0.50 0.10 0.20–0.7 3.5–4.5 0.05–0.25 0.25   0.15         0.05 0.15 remainder
6061 0.40–0.8 0.7 0.15–0.40 0.15 0.8–1.2 0.04–0.35 0.25   0.15         0.05 0.15 remainder
6063 0.20–0.6 0.35 0.10 0.10 0.45–0.9 0.10 0.10   0.10         0.05 0.15 remainder
6082 0.7–1.3 0.50 0.10 0.40–1.0 0.60–1.2 0.25 0.20   0.10         0.05 0.15 remainder
6351 0.7–1.3 0.50 0.10 0.40–0.8 0.40–0.8   0.20   0.20         0.05 0.15 remainder
7075 0.40 0.50 1.2–2.0 0.30 2.1–2.9 0.18–0.28 5.1–6.1   0.20         0.05 0.15 remainder
  Manganese plus chromium must be between 0.12–0.50%.
  This column lists the limits that apply to all elements, whether a table column exists for them or not, for which no other   limits are specified.

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