This specification has been declared NONCURRENT by the Aerospace Materials Division, SAE, as of September, 2003. It is recommended, therefore, that this specification not be specified for new designs. NONCURRENT refers to those specifications that have been widely used and may be required on some existing designs in the future. The Aerospace Materials Division, however, does not recommend these specifications for future use in new designs. Similar but not necessarily identical products are covered by the following specifications: SAE AMS 6346 Steel, Bars, 0.95Cr - 0.20Mo (0.28 - 0.33C) (SAE 4130) Hardened and Tempered, 125 ksi (862 MPa) Tensile Strength

SAE AMS 6348 Steel, Bars, 0.95Cr - 0.20Mo (0.28 - 0.33C) (SAE 4130) Normalized

SAE AMS 6370 Steel, Bars, Forgings, and Rings, 0.95Cr - 0.20Mo (0.28 - 0.33C)

SAE AMS 6528 Steel, Bars, 0.95Cr - 0.20Mo (0.28 - 0.33C) Special Aircraft-Quality, Normalized

This specification covers chrome-molybdenum (4130) steel bars and forging stock of aircraft quality.