Duplex Stainless Steel 1.4462

Duplex Stainless Steel 1.4462

Duplex Stainless Steel 1.4462 (UNS S31803/S32205/AISI 2205) is typical of the mid-range of properties, with good weldability and mechanical properties, higher resistance to stress corrosion cracking, and about twice the strength of austenitic stainless steel, such as AISI 304 grade stainless steel.

Gnee is one of the top three steel manufacturers in China, producing and wholesale high-quality 1.4462 materials such as plates, tubes, coils, bars, pipe fittings, etc. We have experienced technical support and look forward to your cooperation!

EN 1.4462 duplex stainless steel is a multi-purpose material with strong corrosion resistance, high strength and good toughness, suitable for petrochemical processing, oil and gas, marine engineering and other industries. The chemical composition contains 21-23% chromium, 4.5-6.5% nickel, and 2.5-3.5 molybdenum. EN 1.4462 complies with various international standards and names, such as ASTM A789, ASTM A790, UNS S31803/S32205, etc

AISI 1.4462
SAF 2205
UNS S31803, S32205
EN 1.4462
BS 318 S13
BS 970
SAE J405

Value Added ServicesCutting
Non Destructive
Ultrasonic Testing
Draw & Expand as per required Size & Length
Duplex Stainless Steel 1.4462 Pipe ENDPlain End
Beveled End

Production Process:

  • Alloying & Smelting
  • Casting
  • Quality Control & Testing
  • Extrusion
  • Polishing
  • Pickling
  • Passivation

Production Technology:

  • Melting
  • Casting
  • Hot rolled
  • Cold Rolled
  • Heat Treatment
  • Cutting
  • Machining
  • Surface Treatment

Available, welcome to consult

A) Packaging Details: Standard export seaworthy packing or as required.
B) Delivery Time: 30-50 days, 7 days for stock goods.
C) Loading Port: Shanghai, Tianjin, Qingdao.
D) Offer Ability: 5000MT/Per Month.
E) MOQ: 1 Pcs.

Get A Free Quote

Duplex Stainless Steel 1.4462 Manufacturer Supplies Various Forms

GNEE is a professional stainless steel manufacturer and supplier in China, with 15 years of successful experience, providing grade EN 1.4462 duplex steel of different shapes, pipes, plates, coils, rods, pipe fittings, profiles, flangs, etc. in various sizes and specifications, supporting processing customization, factory price, Welcome free consultation and quotation!

More Information About Stainless Steel 1.4462

FormsDuplex Stainless Steel 1.4462 ASTM StandardDuplex Stainless Steel 1.4462 ASME Standard
1.4462 Stainless Steel BarsASTM  A276ASME SA479M
ASTM  A484
1.4462 Stainless Steel Plate/StripASTM A240ASME SA240
1.4462 Stainless Steel Pipes
(Welded Pipes/Seamless Pipes)
1.4462 Stainless Steel Pipe Fittings
(Welded Pipe Fittings/Seamless Pipe Fittings)
1.4462 Duplex Steel Plate:

1.4462 Duplex Steel Hot rolled Plate/Sheet:

Thickness: 3-50mm (0.118 inches to 1.968 inches) Or As Required

Width: 1000mm(39.37inches), 1219mm(48inches), 1500mm(59.06inches), 1800mm(70.87inches), 2000mm(78.74inches) (including raw edges) Or As Required

1.4462 Duplex Steel Cold rolled Plate/Sheet:

Thickness: 0.3-6mm (0.012 inches to 0.236 inches) Or As Required

Width: 1000mm(39.37inches), 1219mm(48inches), 1500mm(59.06inches), 1800mm(70.87inches), 2000mm(78.74inches) (including raw edges) Or As Required

1.4462 Duplex Steel Pipe:
Duplex Steel 1.4462 Seamless Pipe●Size: 4 – 219mm
●Thickness: 0.5 – 20mm
●Length: Single, Double Random & Cut Length
Duplex Steel 1.4462 Welded Pipe●Size: 5.0 – 1219.2 mm
●Thickness: 0.5 – 20mm
●Length: Single, Double Random & Cut Length
1.4462 Duplex Steel Bar/Rod:
Round barDiameter:0.1~500mm Or As Required
Angle bar0.5mm*4mm*4mm~20mm*400mm*400mm
Flat bar0.3~200mm; Width1:~2500mm
Square bar1mm*1mm~800mm*800mm
Length2m, 5.8m, 6m, Or As Required
  • Polishing
  • Chemical coloring
  • Pickling
  • Physical Vapor Deposition
  • Passivation
  • Sandblasting

  • Polishing
  • Chemical coloring
  • Pickling
  • Physical Vapor Deposition
  • Passivation
  • Sandblasting

Parameters Of High-Quality Duplex 1.4462

Chemical Element% Present
Carbon (C)0.0 – 0.03
Chromium (Cr)21.00 – 23.00
Manganese (Mn)0.0 – 2.00
Silicon (Si)0.0 – 1.00
Phosphorous (P)0.0 – 0.03
Sulphur (S)0.0 – 0.02
Nickel (Ni)4.50 – 6.50
Nitrogen (N)0.10 – 0.22
Molybdenum (Mo)2.50 – 3.50
Iron (Fe)Balance
Mechanical PropertyValue
Proof Stress450 Min MPa
1.4462 Tensile Strength650 to 880 MPa
Elongation A50 mm25 Min %
Hardness Brinell270 Max HB
Physical PropertyValue
Density7.805 g/cm³
Thermal Expansion13.7×10^-6 /K
Modulus of Elasticity200 GPa
Thermal Conductivity19.0 W/m.K
Electrical Resistivity0.85 x10^-6 Ω .m
What Is Duplex Stainless Steel 1.4462?

The development of Duplex stainless steel began in the 1920s, aiming to provide better comprehensive properties than austenitic and ferritic stainless steels, and 1.4462 is a representative grade.

During forging, it is sensitive to thermal shock and requires slow heating to 1200°C, followed by forging at temperatures between 1200°C and 900°C, with rapid cooling in air or water. Welding 1.4462 is challenging due to its dual-phase structure, necessitating high energy densities and careful control to maintain the desired phase balance and mechanical properties.

In terms of machining, its high strength and work hardening nature demand the use of cermet or coated tungsten carbide tools for effective processing. Cold working is feasible under appropriate conditions, as specified in DIN EN 10263-5.

Despite its numerous advantages, there are limitations to consider. 1.4462 duplex stainless steel can be susceptible to embrittlement at high temperatures, particularly in the range of 600°C to 900°C, which necessitates rapid cooling after hot working. Additionally, its high strength can make it more challenging to machine compared to austenitic grades, requiring specialized tooling and techniques.


Oil and Gas Industry: Duplex Stainless Steel 1.4462 Pipes Used in offshore and onshore applications, including pipelines, production tubing, and subsea equipment.

Chemical Processing: Utilized in chemical and petrochemical plants for conveying corrosive chemicals, acids, and solvents.

Marine Applications: Employed in shipbuilding and maritime structures where resistance to saltwater corrosion is crucial, used for piping systems, heat exchangers, and desalination equipment.

Structural Engineering: In construction, especially in environments where corrosive elements are present, for applications such as bridge components, structural supports, and architectural elements.

Pressure Vessels: Duplex Stainless Steel 1.4462 Plate is Used in the fabrication of pressure vessels for storing and processing fluids under high pressure due to its excellent strength and corrosion resistance.

Heat Exchangers: Utilized in the construction of heat exchangers where resistance to corrosion and high-temperature performance are critical for efficient heat transfer.

Chemical Processing Equipment: Ideal for various chemical processing equipment where corrosion resistance, such as in reactors, tanks, and storage vessels, is crucial.

Structural Components: Applied in structural elements, such as beams and columns, in construction where strength, corrosion resistance, and longevity are important factors.

Industrial Machinery: Used in the manufacturing of industrial machinery components, especially in environments exposed to corrosion and high stress.

Chemical and Petrochemical Industries: Duplex Stainless Steel 1.4462 bars are utilized in equipment for handling aggressive chemicals and corrosive environments. They are employed in chemical storage tanks, piping systems, and reactors due to their corrosion resistance and strength.

Oil & Gas Sector: These bars are integral in offshore and onshore oil & gas applications, including pipelines, subsea equipment, and structural components, where corrosion resistance and high strength are crucial.

Marine and Coastal Structures: Duplex steel bars are employed in marine environments due to their resistance to seawater corrosion and erosion. They are used in boat shafts, propellers, and components for coastal structures.

Construction and Architecture: In the construction industry, duplex steel bars find application in structural components, bridges, and architectural features due to their strength, durability, and corrosion resistance, especially in environments with high chloride content.

Pulp and Paper Industry: Duplex steel bars are utilized in pulp and paper manufacturing for handling corrosive chemicals and solutions used in the paper-making process.

Food Processing and Storage: Due to their corrosion resistance and hygienic properties, duplex steel bars are employed in food processing equipment and storage tanks where cleanliness and resistance to corrosion are essential.

Why Choose Gnee Steel 1.4462?

Gnee, as a Chinese stainless steel supplier with 15 years of history, exports to 60+ countries. We provide duplex material 1.4462 plates & pipes & rods & profiles & pipe fittings, etc., compared to 316 stainless steel, duplex steel 1.4462 has greater corrosion resistance, strength and durability. Gnee is committed to providing comprehensive stainless steel solutions, Our sales team is dedicated to helping every step of the way, from selecting the right product to delivery and after-sales one-stop service.


In addition, our Duplex Stainless Steel has been successfully exported to more than 60 countries such as Singapore, Malaysia, The United Arab Emirates, Kenya, Philippines. Many regular customers come to visit our company and factory and make multiple orders.

What Services Does Gnee Provide?

Gnee can provide the following measurement services for stainless steel:

Dimensional Measurement: Measure dimensional parameters such as length, width and thickness by measuring instruments to ensure that the stainless steel is qualified and meets the design requirements.
Surface Measurement: Measure parameters such as flatness, bumpiness and surface roughness of the stainless steel surface to help ensure that the quality and surface condition of the stainless steel meets the requirements.
Thickness Measurement: Use thickness gauges to accurately measure the thickness of the stainless steel to ensure it meets the design requirements.
Material Measurement: Use material analysis instruments to measure the chemical composition and mechanical properties of the stainless steel to ensure that the quality and properties of the stainless steel meet the requirements.
Bending And Deformation Measurements: Use tools such as bending gauges and displacement sensors to measure and monitor the degree of bending and deformation of stainless steel to ensure that it is within the allowable range.

Ask Measurement service

Gnee can customize the size and shape of your stainless steel for your specific project needs. Custom design of stainless steel is carried out by a team of professional engineers and designers. Based on the project requirements and constraints, they will use calculation and simulation tools combined with experience and technical knowledge to optimize the stainless steel design to meet the specific needs of your different projects

● Adjustment of the thickness, width and length of stainless steel based on load calculations and strength requirements for structural design.
● The shape of the stainless steel can be designed according to the demand characteristics.
● If the convenience of installation and maintenance is considered, we can also add openings and passages for easy access and operation in the design for areas that require frequent maintenance.

Ask Customized Services

Sourcing Gnee stainless steel can provide the following further processing services. We can customize to meet the specific needs of our customers for different projects.

Cutting Service: Stainless steel can be custom cut to obtain the desired shape and size according to the customer’s needs. For example, flame cutting, plasma cutting, laser cutting, etc., can cut stainless steel into desired plates, blocks, shaped pieces, etc.
Bending & Forming: Stainless steel is bent and formed by applying stress and appropriate processes to obtain the desired shape.
Welding Services: Stainless steel can be subjected to various types of welding services, including manual arc welding, gas-shielded welding, laser welding, etc.
Hole Turning And Machining: Stainless steel is turned and holes are machined through the use of machining equipment. These processes produce smooth surfaces, precise holes and threads to meet specific assembly requirements.
Surface Treatments: Surface treatments can be applied to improve the corrosion resistance and aesthetics of the stainless steel. This includes methods such as painting, hot dip galvanizing, and electroplating to add a protective layer and provide corrosion resistance.

Ask Deep Processing Services

Gnee stainless steel can provide testing and the following third-party inspection services. These third-party testing services provide independent and objective verification of stainless steel’s compliance with relevant standards and regulations.

Mechanical Property Testing: Used to determine whether the strength, toughness, ductility and other mechanical properties of stainless steel meet the specified requirements.
Chemical Composition Analysis: Quantitative determination of elements on stainless steel samples through spectral analysis, atomic absorption spectroscopy, inductive coupling and other technologies.
Corrosion Performance Test: Common corrosion performance test methods include salt spray corrosion test, acid-base corrosion test and electrochemical corrosion test.
Tensile Strength Test: Through the tensile test, the parameters such as yield strength, tensile strength and breaking strength of stainless steel during the tensile process are measured.
Non-Destructive Testing: Non-destructive testing is used to evaluate hidden defects, cracks and looseness in stainless steel materials. Common methods include ultrasonic testing, magnetic particle testing, eddy current testing, and radiographic testing.
Pressure Test: By exposing stainless steel products to a specific pressure, it is tested whether there are problems such as leakage or deformation to ensure that its pressure resistance meets the requirements.
Surface Quality Test: Used to evaluate the surface flatness, smoothness and oxide layer of stainless steel products.
Welding Performance Test: Check the appearance, mechanical properties and metallographic microstructure of the weld to ensure that the quality of the stainless steel welded joint meets the requirements.
Metallographic Inspection: Through metallographic inspection, the structure, grain size, non-metallic inclusions, etc. of stainless steel are checked to evaluate its quality and performance.

Ask Testing Services
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