AMS5620J Steel, Corrosion- and Heat-Resistant, Bars, Wire, Forgings, and Forging Stock 13Cr (0.30 - 0.40C) (420F, 420FSe) Free-Machining Grade, Annealed

AMS5620J is the result of a Five-Year Review and update of the specification. The revision updates the title to match the scope, clarifies composition requirements (3.1.1), aligns bar and wire conditions and testing to other similar specifications (3.2.1, 3.2.2, 8.3), prohibits bar cut from plate (3.2.1.3, 4.4.1), removes macroetch requirements similar to other specifications (3.3.1), updates decarburization requirements (3.3.1.4), updates tolerances for temperature and time for heat treatment and adds pyrometry control similar to other specifications (3.3.2), updates AS1182 requirements (3.4.1, 8.5), adds allowance for testing forging stock (4.4.3), and updates the product exception requirements (8.6).