AMS6414N Steel, Bars, Forgings, Mechanical Tubing, and Forging Stock 0.80Cr - 1.8Ni - 0.25Mo (0.38 - 0.43C) (SAE 4340) Vacuum Consumable Electrode Remelted

AMS6414N is the result of a Five-Year Review and update of the specification. The revision updates the title to match the scope, prohibits unauthorized exceptions (3.7, 4.4.4, 5.2.1.1, 8.7), updates composition testing (3.1, 3.1.1), updates heat treatment specification (3.3.2), updates macrostructure (3.4.1.1, 3.4.1.2, 8.9), modifies Jominy requirements (3.4.4), updates decarburization test methods (3.4.5), heat treatment updated to table format (3.4.6), adds note on stock removal (8.6), and allows prior revisions (8.8).