In environments where moisture, salt, or chemicals are present, stainless steels provide an alternative. Among these, “Duplex 2205” has been developed to balance corrosion resistance with mechanical strength, making it suitable for demanding conditions.

Corrosion resistance and material composition
Corrosion can manifest in various forms, each presenting its own risks. Pitting corrosion occurs in chloride-rich environments and leads to localized surface damage. Crevice corrosion is more common in joints and confined spaces, where stagnant solutions accelerate deterioration. Stress corrosion cracking (SCC) arises when materials experience tensile stress in corrosive conditions, which can result in sudden failures. “Duplex 2205”, with its composition of 21% to 23% chromium, 2.5% to 3.5% molybdenum, and 0.1% to 0.22% nitrogen, provides resistance to these forms of degradation while maintaining durability in different applications.

Mechanical properties and performance
“Duplex 2205” is designed to offer a balance of mechanical strength and durability. With a tensile strength ranging from 1,700MPa to 2,300MPa depending on processing, it performs well in cyclic load applications where fatigue resistance is necessary. The material also offers improved weldability compared to ferritic stainless steels, allowing for reliable and durable joints in manufactured components.

Applications in industry
Due to its material characteristics, “Duplex 2205” is used across various industries. In spring manufacturing, it is applied in automotive, aerospace, and industrial settings where strength and resistance to wear are required. The automotive sector utilizes “Duplex 2205” in suspension systems, braking components, and other high-stress parts. In marine and offshore environments, its ability to withstand seawater exposure makes it a suitable choice for structural and mechanical components. The chemical processing industry benefits from its stability in the presence of harsh chemicals and acids, while in the oil and gas sector, it is used in pipelines, valves, and components subjected to extreme pressures and corrosive substances.

Lifecycle considerations and sustainability
By extending the operational lifespan of components, “Duplex 2205” contributes to reduced maintenance requirements and lower overall costs. Its durability minimizes material waste and aligns with sustainability goals by decreasing the frequency of replacements and lowering energy consumption associated with production and maintenance activities.

Conclusion
Suzuki Garphyttan’s “Duplex 2205” stainless steel has been developed to meet the demands of industries requiring a combination of corrosion resistance and mechanical performance. Its properties make it a reliable choice for applications exposed to harsh conditions, where material longevity is a key factor.

Suzuki Garphyttan AB
Bruksvägen 3
719 41 Garphyttan, Sweden
Tel.: +46 19 295100
info@sg-wire.com
www.suzuki-garphyttan.com