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Introduction
S31803 Duplex Stainless Steel Wire offers high strength and corrosion resistance, perfect for marine, chemical, and industrial applications needing durable, long-lasting wire.
Advantage
High Strength
Balanced austenitic-ferritic structure delivers 20–40% higher strength than 304/316 wires for demanding applications.
Superior Corrosion Resistance
High Cr and Mo content forms a stable passive film, providing strong resistance to chloride, pitting, and crevice corrosion.
Versatile Surface Finishes
Available in bright, drawn, or polished finishes, supporting various industrial and fabrication requirements.
Specification
|
Parameter |
Specification / Range |
Description |
|
Material |
S31803 Duplex Stainless Steel |
MTC available per ASTM A276 / UNS S31803 |
|
Diameter |
0.5 mm – 10 mm |
Custom sizes available |
|
Length |
Coil or cut-to-length |
Adjustable according to customer requirements |
|
Surface Finish |
Bright / Drawn / Polished |
Smooth, wear-resistant surface |
|
Yield Strength |
≥ 450 MPa |
ASTM standard |
|
Tensile Strength |
≥ 750 Mpa |
ASTM standard |
|
Hardness |
HB 180–220 |
Adjustable on request |
|
Inspection Reports |
SGS / BV / TUV |
Third-party certification optional |
|
Standards |
ASTM A276, EN 1.4462, UNS S31803 |
Compliant with international standards |
|
Element |
Content |
|
Chromium (Cr) |
22% |
|
Nickel (Ni) |
5–6% |
|
Molybdenum (Mo) |
3% |
|
Nitrogen (N) |
Trace |
|
Iron (Fe) |
Balance |
Applications
Marine & Offshore: Rigging, seawater piping, and offshore structures
Chemical & Petrochemical: Heat exchanger springs, fasteners, and piping supports
Energy & Power: Offshore wind turbines and power plant equipment
Construction & Machinery: High-strength tension wires and corrosion-resistant fixtures
Customization Services
|
Customization |
Options |
|
Diameter & Length |
0.5–10 mm, cut-to-length or coils |
|
Machining |
Cutting, drilling, welding, and threading |
|
Material Grade |
S31803, 2205, 2507, 904L, etc. |
|
Surface Finish |
Bright, drawn, polished, sandblasted, coated |
|
MOQ |
Small or large orders |
|
Special Requests |
Custom tolerances or mechanical properties |
Delivery & Packaging
Stock items: 7–15 days shipping
Custom orders: 20–30 days depending on quantity and specifications
Export-standard secure packaging to prevent damage and corrosion
Why Choose Us
Reliable Quality - ISO-certified processes and partnerships with leading steel mills guarantee consistent material quality.
Large Inventory - An extensive stock of plates, pipes, and rods enables fast order fulfillment.
Custom Processing & OEM - Advanced machining centers provide cutting, bending, CNC machining, welding, and branding in accordance with customer specifications.
Rapid Customer Response - Professional 24/7 service ensures quick responses to technical and logistics inquiries.
Certification
ISO 9001 certified, with Mill Test Certificates (MTC) and optional EN 10204 3.1/3.2 third-party inspection reports to guarantee material traceability and compliance with ASTM, UNS, and EN standards.
FAQ
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