16Cr-4Ni duplex stainless steel is a lean duplex stainless steel combining a dual-phase microstructure of austenite and ferrite to achieve high strength with moderate corrosion resistance at lower nickel and molybdenum content than standard duplex grades. It is used in moderately corrosive environments where weight savings, cost control, and fabricability are important—such as structural components in chemical processing, desalination plants, and offshore pipelines—and offers a practical middle ground between conventional austenitic stainless steels and higher-alloyed duplex grades for applications that do not demand extreme pitting or stress-corrosion resistance.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 14.00 | - | — | ||
Ultimate Tensile Strength(σUTS) | 204.4 | ksi | — | ||
Yield Strength (0.2% offset)(σy) | 167.5 | ksi | — |