Rationale:
AMS6374E results from a Five-Year Review and update of this specification that revises analytical methods (3.1), adds grain size by composition option (3.1.1, 3.4.2) and tensile strain rates (3.4.1.1), prohibits unauthorized exceptions (3.7), revises testing criteria (4.2), and revises reporting and marking (4.4, 5.2).
