Steel, Bars and Forgings, and Forging Stock, 3.1Cr - 11.5Ni - 13.5Co - 1.2Mo (0.23 - 0.25C), Vacuum Melted, Normalized and Overaged, Precipitation Hardenable AMS6532

This specification covers a premium aircraft quality alloy steel in the form of bars, forgings 100 square inches (645 cm2) and under in cross-sectional area, and forging stock of any size.