11Cr-9Ni is an austenitic stainless steel with modest chromium and nickel content, stabilized by molybdenum and trace alloying elements (aluminum, titanium, vanadium). This composition places it at the lower end of the austenitic stainless family, suitable for moderate corrosion resistance and good formability rather than extreme high-temperature or corrosive environments. It appears in applications requiring a balance of workability, corrosion resistance, and moderate strength—such as general chemical equipment, fasteners, and structural components in mildly corrosive settings—where cost-effective stainless performance is preferred over premium 300-series grades like 316.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 21.00 | - | — | ||
Ultimate Tensile Strength(σUTS) | 149.9 | ksi | — | ||
Yield Strength (0.2% offset)(σy) | 145.9 | ksi | — |