2205 Duplex STAINLESS STEEL
What is 2205 Duplex STAINLESS STEEL?
2205 Duplex Stainless Steel (UNS S32205 / S31803) is a dual-phase stainless steel composed of approximately equal parts ferrite and austenite, giving it a unique balance of high strength, excellent corrosion resistance, and stress corrosion cracking resistance.
Its composition provides twice the yield strength of conventional austenitic stainless steels like 304 or 316, making it ideal for structural applications in harsh environments. 2205 Duplex is widely used in chemical processing, marine, oil and gas, pulp and paper, and wastewater treatment applications.
Key Properties
and Advantages
1. High Strength
2205 Duplex offers roughly double the yield strength of standard austenitic stainless steels, allowing for thinner sections and lighter designs without compromising integrity.
2. Excellent Corrosion Restistance
Its balanced microstructure provides superior resistance to general corrosion, pitting, and crevice corrosion, especially in chloride-rich or acidic environments.
3. Stress Corrosion Cracking Resistance
The ferritic phase of 2205 significantly improves its resistance to chloride-induced stress corrosion cracking, making it ideal for aggressive service conditions.
4. Weldability & Fabricability
2205 can be readily welded and fabricated using standard methods, though care must be taken to preserve the desired ferrite-austenite ratio during processing.
Material We Offer
2205 Duplex Stainless Steel (UNS S32205 / S31803): A high-performance duplex grade offering excellent strength, pitting resistance, and stress corrosion cracking resistance for a wide range of corrosive environments.
Why Choose System 22?
At System22, we supply precision fasteners and components made from 2205 Duplex Stainless Steel to meet the demands of high-strength, corrosion-prone applications. Our team ensures each product delivers maximum performance, dimensional accuracy, and reliability—whether you're working in chemical processing, marine engineering, or structural design.
We offer both standard and custom-engineered parts, backed by deep material knowledge and a commitment to quality manufacturing and responsive service.
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Looking for dependable strength and corrosion protection? Let’s talk about how 2205 Duplex Stainless Steel can improve your next project.
Contact System22 today to speak with a specialist and explore tailored material solutions.