This specification covers an aluminum alloy in the form of sheet and plate over 0.039 to 4.000 inch (over 0.991 to 101.60 mm) inclusive, in thickness (see 8.5).
Rationale: AMS4078L results from a Five-Year Review and update of this specification. This standard is being reviewed as part of the SAE Five-Year Review policy. The committee will look at possible changes to ordering information and other potential updates throughout the standard.