AMS6340D Steel Bars, Forgings, Mechanical Tubing and Forging Stock 0.88Cr - 1.8Ni - 0.42Mo - 0.08V (0.28 - 0.33C) (4330 Mod) Premium Aircraft Quality Consumable Electrode Vacuum Remelted

AMS6340D is the result of a Five-Year Review and update of the specification. The revision includes update of the Title to match the Scope and product quality, update to composition reporting (see 3.1.1), clarification of macrostructure (see 3.4.1 and 8.8), revision of hardenability requirements (see 3.4.4), revision of decarburization testing requirements (see 3.4.5.5), addition of strain rate requirements to all tensile tests (see 3.4.6.3), additional ordering information on forging stock (see 4.4.3 and 8.8), notes on bar stock quality (see 8.4), and updates to the requirements for product exceptions (see 4.4.4 and 8.7).