Rationale:
AMS4881D revises form to permit use of continuous castings, clarifies when use of tensile specimens machined from casting is required (3.4.2, 3.4.2.3, 3.6.1.2.3, 4.2.1, 4.2.1.1), revises hardness (3.6.2.2), and updates wording for permissible welding of castings (3.7.5.1).
