This specification covers an aluminum alloy in the form of extruded bars, rods, shapes (profiles), and tubing 0.250 to 3.000 inches, incl (6.35 to 76.20 mm) in nominal diameter, least thickness or nominal wall thickness (see 8.5).
Rationale:
AMS4331A prohibits unauthorized exceptions (3.6), revises condition (3.2), properties (3.3.1.1), reports (4.4.2), and identification (5.1.1), and results from a Five-Year Review and update of this specification.
