UNS S31600 Stainless Steel – Molybdenum-Alloyed Chloride Corrosion Shield

Product Overview

UNS S31600 is a molybdenum-enhanced austenitic stainless steel, designed to address the limitations of S30400 in chloride-rich environments. Featuring 2.0-3.0% molybdenum alongside 16-18.5% chromium and 10-14% nickel, it delivers superior pitting and crevice corrosion resistance, making it ideal for marine, coastal, and chemical processing settings. This grade retains the non-magnetic, ductile austenitic structure, with excellent low-temperature toughness and fabricability. Unlike S30400, S31600 thrives in harsh, salt-laden atmospheres and mild chemical solutions, serving as the go-to upgrade for applications requiring enhanced corrosion durability.

Chemical Composition (Mass Fraction, %)

C ≤ 0.08, Cr: 16.00-18.50, Ni: 10.00-14.00, Mo: 2.00-3.00, Mn ≤ 2.00, Si ≤ 1.00, P ≤ 0.045, S ≤ 0.030, N ≤ 0.11

Mechanical Properties (Annealed Condition)

Tensile Strength ≥ 520 MPa; Yield Strength ≥ 205 MPa; Elongation ≥ 40%; Hardness ≤ 215 HB

Core Advantages

Exceptional chloride-induced pitting/crevice corrosion resistance; superior performance in marine/chemical environments; good low-temperature toughness; non-magnetic; versatile forming and welding capabilities; durable in harsh atmospheric conditions.

Typical Applications

Marine hardware, chemical processing equipment, desalination systems, coastal construction, pharmaceutical machinery, and food processing units with salt exposure.

Equivalent Grades

AISI 316, EN 1.4401, GB 06Cr17Ni12Mo2, SUS316

Stainless Steel Suppliers

If you have project requirements for stainless steel, we welcome your order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.Email: info@gneestainless.com

 

Testing and Documentation: Factory test certificate, EN 10204 3.1, chemical report, mechanical report, destructive testing report, non-destructive testing report, PMI test report, visual inspection report, third-party inspection report, NABL certified laboratory report.
Packaging: Wooden crate packaging, bubble wrap packaging, steel strapping, or packaging according to customer requirements.