SAE AMS 6342K:2015-09-02

Steel Bars, Forgings, and Tubing 0.80Cr - 1.0Ni - 0.25Mo (0.38 - 0.43C) (SAE 9840) (Stabilized: Sep 2015)

This specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.