1.1 Form

This specification covers an aluminum alloy in the form of extruded bars, rods, and profiles 0.250 to 2.000 .inches (6.35 to 50.80 mm) in nominal thickness and up to 32 in2 (206 cm2), inclusive, in cross-sectional area (see 8.5).

1.2 Application

These extrusions have been used typically for structural applications requiring a combination of high tensile properties, moderate fatigue strength, stress-corrosion resistance, and good fracture toughness, but usage is not limited to such applications.