aluminum designation system
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Description and Tags
major alloying elements and characteristics
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25 Terms
wrought alloy -1xxx
pure aluminum
wrought alloy - 2xxx
copper
wrought alloy - 3xxx
manganese
wrought alloy - 4xxx
silicon
wrought alloy - 5xxx
magnesium
wrought alloy - 6xxx
magnesium and silicon
wrought alloy - 7xxx
zinc
wrought alloy - 8xxx
other elements
wrought alloy - 9xxx
unused series
cast alloy - 1xxx
pure aluminum
cast alloy - 2xxx
copper
cast alloy - 3xxx
silicon w/ copper and/or magnesium
cast alloy - 4xxx
silicon
cast alloy - 5xxx
magnesium
cast alloy - 6xxx
unused series
cast alloy - 7xxx
zinc
cast alloy - 8xxx
tin
cast alloy - 9xxx
other elements
1xxx characteristics
high corrosion resistant, excellent thermal, and electrical properties but very low strength
2xxx charac
susceptible to intergranular corrosion when improperly heat treated
3xxx charac
non heat treatable, moderate strength, and good working characteristics
4xxx charac
low melting point, good for welding and brazing
5xxx charac
good welding and corrosion resistant charac
6xxx charac
heat treatable, medium strength, and good forming and corrosion resistance
7xxx charac
hard and difficult to bend