13Cr-2Ni duplex stainless steel (variant 4) is a lean duplex stainless steel combining a ferritic-austenitic microstructure with moderate chromium and nickel alloying, plus vanadium and molybdenum for strength and corrosion resistance. This alloy targets applications requiring a balance between cost efficiency and corrosion resistance in mildly aggressive environments, offering better mechanical properties than ferritic grades while using less nickel than standard 2205 duplex steels. It is typically selected for moderately corrosive service in pumps, valves, fasteners, and pressure vessels where both strength and material economy matter—particularly in oil & gas, water treatment, and chemical processing where chloride environments are present but not extreme.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 23.60 | - | — | ||
Ultimate Tensile Strength(σUTS) | 163.7 | ksi | — | ||
Yield Strength (0.2% offset)(σy) | 148.1 | ksi | — |