SAE AMS4372B PDF
This specification covers an aluminum-lithium alloy in the form of plate 0.500 to 6.500 inches (12.70 to 165.00 mm) in nominal thickness (see 8.6).
This plate has been used typically for parts where low density is needed in combination with a high level of mechanical properties and very good resistance to stress-corrosion cracking, but usage is not limited to such applications. Material is delivered in T34 temper and artificially aged to obtain T82 temper by the end user.
The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply.