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Duplex 1.4462 (UNS S31803)

Stainless steel, renowned for its versatility and durability, plays a pivotal role in diverse industries. Amidst the various stainless steel grades, Duplex 1.4462,  emerges as a compelling choice, offering exceptional corrosion resistance, extended durability, and an appealing aesthetic.

Noteworthy for its distinctive characteristics, Duplex 1.4462 stainless steel holds a significant position in the stainless steel market. As a duplex alloy with a combination of austenitic and ferritic phases, it delivers robust corrosion resistance and strength. With a composition marked by chromium, nickel, molybdenum, and nitrogen, Duplex 1.4462 excels in applications demanding both corrosion resistance and high mechanical strength.

Duplex 1.4462 provides a reliable solution, ensuring durability and resistance to corrosion in various challenging environments across industries.

Key Benefits of Duplex 1.4462

Corrosion Resistance: Duplex 1.4462 stainless steel boasts exceptional corrosion resistance, making it an ideal choice for applications in aggressive environments such as chemical processing, marine engineering, and oil and gas. Its resistance to both uniform and localised corrosion sets it apart in demanding conditions.

Strength and Durability: The duplex structure of this stainless steel grade imparts superior strength and durability. This makes Duplex 1.4462 suitable for applications where structural integrity is crucial, including in pressure vessels, pipelines, and various industrial components.

Versatility in Applications: Duplex 1.4462 stainless steel’s versatility extends across a wide range of industries, from construction to food processing. Its ability to perform well in diverse environments, coupled with excellent weldability, positions it as a go to material for complex engineering projects.

Duplex 1.4462 Profiled Coaster

Material Equivalents

UNS S31803
EN1.4462
ASTM2205 (Duplex)

Mechanical Properties

Proof Stress 0.2% (MPa)450 MPa (min) - 520 MPa (max)
Tensile Strength 620 MPa - 830 MPa
Elongation A525%
Hardness (Maximum)HRC : 31

Chemical Composition

ElementSymbolMin (%)Max (%)
CarbonC-0.03
ManganeseMn-2.0
PhosphorusP-0.030
SulphurS-0.02
SiliconSi-1.0
ChromiumCr21.0 - 22.023.0
NickelNi4.56.5
MolybdenumMo2.5 - 3.03.5
Nitrogen N0.08 - 0.140.20
IronFeBalance (≈ 63–66%)Balance

Common Industries

  • Oil & gas (onshore and offshore)
  • Offshore & marine engineering
  • Chemical & petrochemical processing
  • Desalination & water/wastewater treatment
  • Power generation
  • Marine & shipbuilding
  • Food & beverage processing
  • Pharmaceutical & fine chemical plants

Our Duplex 1.4462 Stock

Our Duplex 1.4462 Stock ranges from 1MM to 100MM Thick – Available in Plates, Sheets & Profiles. Sections, Pipes and Tubes of this grade are also available.

All our material is supplied fully certified with EN10204 3.1 or 3.2 certificates as needed. Additional client or third party inspections of material is also available on request with all our material.

We also have our own dedicated quality department that take regular audits of our products and internal processes to ensure that the highest of quality is maintained throughout. To demonstrate this, we are certified to ISO 9001.