13Cr-1Ni duplex stainless steel is a lean duplex stainless steel combining a ferritic-austenitic microstructure with 13% chromium, moderate nickel, and molybdenum additions for corrosion resistance and strength. This alloy family is widely used in oil and gas production, desalination plants, and chemical processing where chloride environments would attack conventional austenitic stainless steels, offering superior pitting resistance and stress corrosion cracking performance at a lower cost than super-duplex grades. Engineers select duplex stainless steels when they need the strength advantages of ferrite with the toughness of austenite, plus resistance to seawater and industrial corrosion—making them ideal for pressure vessels, piping, and subsea components where both mechanical performance and environmental durability are critical.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 19.00 | - | — | ||
Ultimate Tensile Strength(σUTS) | 1.839 | GPa | — | ||
Yield Strength (0.2% offset)(σy) | 1.352 | GPa | — |