13Cr-8Ni Austenitic Stainless (var. 5)

13Cr-8Ni is a precipitation-hardened austenitic stainless steel combining moderate chromium content (13.3%) with significant nickel (7.84%) and aluminum (2.2%) to achieve a dual-phase microstructure that delivers high strength while maintaining corrosion resistance. This variant is engineered for applications demanding both wear resistance and toughness, typically found in aerospace fasteners, high-strength valve components, and automotive structural parts where conventional austenitic stainless steels would be too soft. The aluminum addition enables precipitation hardening, distinguishing it from standard 300-series austenitic grades and making it competitive with martensitic stainless steels where some ductility retention is critical.