Rationale: AMS4424L restores this document to active status and revises Composition (3.1), Chemical Analysis Specimens (3.4.1), Heat Treatment (3.5), Tensile Properties (3.6.1), Quality (3.7), Acceptance Tests (4.2.1), Sampling (4.3) and Protective Treatment (5.2), and Packaging (5.3), removes hardness as a technical requirement and provides information on expected hardness in 8.3, and is a Five Year Review and update of this specification.
