This specification covers an aluminum alloy in the form of plate 0.500 to 2.000 inch, incl (12.70 to 50.80 mm, incl) in thickness (see 8.5).
Rationale:
AMS4458A revises Properties (3.3.2, 3.3.5) and Reports (4.4.1), and is a Five Year Review and update of this specification.