Alloy Family | Principal Alloying Element |
Feature |
Common Use |
---|---|---|---|
1xxx |
None |
99% minimum pure aluminum |
Electrical conductor |
2xxx | Copper |
Very high strength |
Aircraft |
3xxx | Manganese |
Strength, formability |
Siding, ductwork, roofing |
4xxx | Silicon |
Joining |
Welding products |
5xxx | Magnesium |
Corrosion resistance |
Boats, marine applications |
6xxx | Magnesium and Silicon |
Strength |
Structural shapes, pipe |
7xxx | Zinc |
Very high strength |
Aircraft |
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