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SAE AMS 5520H-2021
Steel, Corrosion and Heat-Resistant, Sheet, Strip, Foil, and Plate 15Cr - 7.1Ni - 2.5Mo - 1.1Al Solution Heat Treated, Precipitation Hardenable
This specification covers a corrosion and heat-resistant steel in the form of sheet, strip, foil, and plate 0.0015 inch (0.038 mm) and greater in nominal thickness.
Society of Automotive Engineers [sae]