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Duplex Steel UNS S31803 Electrodes

Name: Duplex Steel UNS S31803 Electrodes
Brand: Skyland Metal & Alloys Inc.
Price: 500.0 INR
Availability: InStock

Price 500.0 INR/ Kilograms

Get a Price/Quote

MOQ : 1 Kilograms

Duplex Steel UNS S31803 Electrodes Specification

Corrosion Resistant
Excellent resistance to pitting and crevice corrosion

Coating Type
Rutile or basic flux coating

Width
Standard sizes available as per specification

Diameter
2.5mm, 3.15mm, 4.0mm, 5.0mm

Tensile Strength
Minimum 620 MPa

Material Composition %
Approximately Cr 22%, Ni 5-6%, Mo 3%, N 0.15-0.22%

Recyclable
Partially (depends on application use and residual material)

Temper
As rolled/annealed

Size
Varies by specification (diameter x length)

Hardness
Brinell 293 max (typical range)

Heat Resistance
Yes

Product Form
Electrode Rod

Product Name
Duplex Steel UNS S31803 Electrodes

Steel Type
Duplex Stainless Steel

Steel Product Type
Welding Electrode

Grade
UNS S31803 (equivalent to ASTM A815 / A182 F51)

Thickness
2.5mm, 3.15mm, 4.0mm, 5.0mm or as specified

Shape
Rod (Welding Electrode)

Steel Standard
AWS A5.4, ASME SFA 5.4, E2209-16

Surface
Coated / Flux covered

Composition
Cr: 21-23%, Ni: 4.5-6.5%, Mo: 2.5-3.5%, Mn: 1-2%, Fe balance

Application
Welding, Joining of Duplex Stainless Steel, Construction, Offshore, Pressure Vessels

Dimension (L*W*H)
Custom or Standard (Length typically 350mm - 450mm)

Weight
Varies per electrode size and length

Color
Grey (Flux coating)

Material Grade
Duplex 2205 (UNS S31803)

Finish Type
Matte / Flux covered finish

Usage
Manual metal arc welding of duplex stainless steel pipes, tanks, plates

Current Type
AC/DC

Nickel Equivalent
3.6 minimum

Packaging
Standard boxes of 5 kg, 10 kg or as per requirement

Ferrite Content
30-60% (weld metal)

Welding Position
Flat, horizontal, vertical, overhead (all positions)

Operating Temperature
Welding ambient: 5C to 40C

Duplex Steel UNS S31803 Electrodes Trade Information

Minimum Order Quantity
1 Kilograms

Delivery Time
7 Days

Duplex Steel UNS S31803 Electrodes About

Duplex Steel UNS S31803 is a ferrite-austenite duplex stainless steel alloy composed of chromium, nickel and molybdenum. The material offers a range of advantages such as excellent corrosion resistance, high strength and toughness, good weldability and formability, low thermal expansion and cost savings compared to other stainless steel grades. Its chemical composition generally comprises around 22% Chromium (Cr) between 18 - 21%, 3% Molybdenum (Mo) between 2.5 - 3.5%, 4.5 6.5% Nickel (Ni) and other economic elements like manganese, nitrogen and iron in varying proportions that provide superior performance to the electrodes used for various industrial applications.

Outstanding Corrosion and Heat Resistance

Duplex Steel UNS S31803 Electrodes are engineered for environments where corrosion and heat pose significant challenges. With their tailored alloy content, these electrodes resist pitting and crevice corrosion while maintaining strength in temperatures up to 300C (572F). Ideal for offshore, chemical, and pressure vessel applications.

Flexible Applications and Welding Positions

Designed for versatility, these electrodes can be used in all welding positions, including flat, horizontal, vertical, and overhead. Suitable for manual metal arc welding of pipes, tanks, and plates, Duplex S31803 electrodes enable consistent results even in complex or restricted spaces.

Reliable Mechanical Properties

Each electrode provides weld metal with a ferrite content of 30-60% and a minimum tensile strength of 620 MPa, achieving a balanced microstructure for both toughness and strength. The flux-covered finish yields an even, matte weld bead, supporting high-quality fabrication across industrial sectors.

FAQ's of Duplex Steel UNS S31803 Electrodes:

Q: How are Duplex Steel UNS S31803 Electrodes used in welding applications?

A: These electrodes are utilized primarily for manual metal arc welding of duplex stainless steel pipes, tanks, and plates under conditions that demand superior corrosion resistance and mechanical strength. They are applied in sectors such as construction, offshore, and pressure vessel manufacturing.

Q: What welding positions can these electrodes accommodate?

A: Duplex Steel UNS S31803 Electrodes are suitable for all standard welding positions-including flat, horizontal, vertical, and overhead-providing exceptional versatility during fabrication and installation tasks.

Q: When should I choose these electrodes over standard stainless steel electrodes?

A: These electrodes are recommended when you require enhanced resistance to pitting, crevice corrosion, and higher tensile strength, especially in aggressive environments found in offshore or chemical processing facilities.

Q: Where are Duplex S31803 electrodes commonly supplied and in what packaging?

A: They are supplied globally by exporters, manufacturers, and suppliers, typically in standard box sizes of 5 kg or 10 kg, or in custom packaging as specified by the client.

Q: What is the process for welding with these electrodes?

A: Welding with Duplex Steel S31803 electrodes involves using AC or DC power sources at ambient temperatures between 5C and 40C. The electrodes feature rutile or basic flux coatings to ensure a stable arc, smooth bead, and effective slag removal.

Q: What benefits do these electrodes provide during fabrication?

A: Duplex Steel UNS S31803 Electrodes offer excellent weldability, high corrosion resistance, reliable mechanical properties, and suitability for all welding positions-making them ideal for challenging industrial environments.

Q: Are these electrodes available in multiple sizes and are they recyclable?

A: Yes, they are available in various diameters (2.5mm-5.0mm) and standard lengths (350mm-450mm). They are partially recyclable, but recyclability depends on the application and residual weld material.

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