This specification covers a corrosion-resistant steel in the form of bars, wire, forgings, and forging stock. These products have been used typically for anti-friction bearing parts requiring resistance to both corrosion and wear with hardness usually not lower than 58 HRC after hardening and tempering, but usage is not limited to such applications.
SAE AMS5880C-2006 history
2013SAE AMS5880E-2013 Steel, Corrosion and Resistant, Bars, Forgings, and Wire 17Cr 0.52Mo (0.95-1.20C) (SAE 51440C) For Bearing Applications