A precipitation-hardened austenitic stainless steel combining 13% chromium with 8% nickel and 2.17% aluminum, designed to achieve high strength through age-hardening while maintaining corrosion resistance. This variant is used in demanding aerospace and power generation applications where elevated-temperature strength and corrosion resistance must be balanced, such as gas turbine components and fasteners that operate in oxidizing or mildly corrosive environments at moderate temperatures. The aluminum addition enables precipitation hardening to achieve strength levels significantly above conventional 300-series austenitic stainless steels, making it an alternative to martensitic or duplex stainless grades when some ductility and toughness cannot be sacrificed.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 16.80 | - | — | ||
Ultimate Tensile Strength(σUTS) | 204.3 | ksi | — | ||
Yield Strength (0.2% offset)(σy) | 196.9 | ksi | — |