This specification covers a corrosion-resistant steel in the form of bars, wire, forgings, and forging stock. These products have been used typically for parts requiring hardness up to 58 HRC and resistance to wear, corrosion, and oxidation, but usage is not limited to such applications.
SAE AMS5630K-2012 history
2022SAE AMS5630M-2022 Steel, Corrosion-Resistant, Bars, Wire, and Forgings and Forging Stock 17Cr - 0.52Mo (0.95 - 1.20C) (440C)