Steel Bars, Forgings, Mechanical Tubing and Forging Stock, 1.7Cr - 3.8Ni - 0.3Mo (0.32 - 0.38C), Aircraft-Quality AMS6539B

DOI: https://doi.org/10.4271/AMS6539B

Issuing Committee: AMS E Carbon and Low Alloy Steels Committee

Publisher: SAE International

Pages: 9

Rationale: AMS6539B is the result of a Five-Year Review and update of the specification. The revision updates the Title to match the Scope, clarifies composition reporting (see 3.1.2), modifies macrostructure requirements (see 3.3.1), revises testing specifications (see 3.2.1 and 3.3.3), adds tables to clarify heat treatment (see 3.3.3, Table 3, and Table 4), temper temperature conversion corrected (see Table 3 and Table 5), updates product exceptions (see Table 2 and 8.5), adds reduced testing per AMS2301 (see 4.2.1 and 4.4), updates prohibition of bar from plate (see 4.4.2), and adds information on ordering bar and tubing (see 8.4).