Duplex Steel UNS S32205 / S31803
Duplex Steel UNS S32205 / S31803
Duplex Steel UNS S32205 / S31803 is a nitrogen-enhanced duplex stainless steel grade known for its exceptional combination of strength, toughness, and corrosion resistance. This alloy offers superior resistance to pitting, crevice corrosion, and stress corrosion cracking, making it ideal for aggressive environments such as chemical processing, oil & gas, and marine industries. Its dual-phase microstructure (austenitic-ferritic) provides twice the strength of standard austenitic stainless steels, along with excellent weldability and durability.
At Apar Alloys, we are a trusted stockist and supplier of Duplex Steel UNS S32205 / S31803 materials, sourcing products from reputed global mills. Our wide inventory includes bars, sheets, plates, and round bars available in multiple sizes and finishes to cater to diverse industrial applications. Each product undergoes strict testing and inspection to ensure unmatched quality, reliability, and performance in demanding conditions.
Specifications
| Grade | AISI | UNS | ASTM A276 / A479 | ASTM A182 | EN (W-Nr) | DIN Spec |
|---|---|---|---|---|---|---|
| 2205 | AISI 2205 | S32205 / S31803 | ASTM A276 / A789 / A479 | F51 / F60 | 1.4462 | X2CrNiMoN22-5-3 |
General Characteristics
Austenitic-ferritic duplex stainless steel
Excellent resistance to pitting and crevice corrosion
High tensile and yield strength
Good weldability and formability
Superior resistance to stress corrosion cracking
Outstanding performance in chloride and acidic environments
Chemical Composition (nominal) %
| Element | C | Mn | Si | Cr | Ni | Mo | N | S | P | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| S32205 / S31803 | ≤0.03 | ≤2.00 | ≤1.00 | 21.0–23.0 | 4.5–6.5 | 2.5–3.5 | 0.14–0.20 | ≤0.020 | ≤0.030 | Balance |
Applications
Pressure vessels and heat exchangers
Offshore platforms and subsea piping systems
Chemical and petrochemical processing plants
Pulp and paper digesters and evaporators
Marine and desalination equipment
Power generation and heat transfer systems
Advantages
- Excellent corrosion and pitting resistance
- High tensile and yield strength
- Superior resistance to stress corrosion cracking
- Good weldability and formability
- Reliable performance in chloride-rich environments
- Long service life with reduced maintenance
Mechanical Properties (Typical at Room Temperature)
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 620 – 880 |
| Yield Strength (MPa) | ≥450 |
| Elongation (%) | 25 |
| Hardness (Brinell) | ≤290 HB |
Why Choose Apar Alloys
At Apar Alloys, we combine metallurgical excellence with a customer-oriented approach to deliver superior duplex stainless steel materials that conform to international quality standards. Our strong supply network and rigorous quality checks ensure reliability, precision, and consistency in every product.
Reliable Stockist & Supplier
We maintain a comprehensive stock of Duplex Steel UNS S32205 / S31803 materials, ensuring quick availability and fast dispatch.
Sourced from Trusted Global Mills
Our duplex steel products are sourced from renowned international manufacturers, guaranteeing authenticity and consistent quality.
Stringent Quality Checks
Each batch is thoroughly inspected and tested for chemical, mechanical, and dimensional accuracy.
Custom Sizing & Cutting
We provide customized cutting, sizing, and finishing solutions tailored to meet project-specific requirements.
Competitive Pricing and Timely Delivery
Apar Alloys ensures cost-effective pricing and prompt delivery across all industrial sectors.
Dedicated Client Support
Our experienced team provides full assistance from material selection to delivery, ensuring smooth and long-term collaboration.
Get in Touch
Contact Us
Looking for a dependable source for Duplex Steel UNS S32205 / S31803 materials? Connect with Apar Alloys today for quotations, expert consultation, and customized duplex stainless steel supply solutions tailored to your business needs.
[Call] +91 98333 89128
301, 3rd floor, A WING, Krishvi Escape, Near Vinay Health Home, Fanaswadi Bhuleshwar, Mumbai - 400002.
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