2205 is a High Corrosion Resistance and Strength duplex stainless steel, with a chemical composition of nearly equal proportions of austenite and ferrite. This combination allows the alloy to be stronger and tougher than standard austenitic steels. Duplex stainless steels like 2205 also maintain...
2205 is a High Corrosion Resistance and Strength duplex stainless steel, with a chemical composition of nearly equal proportions of austenite and ferrite. This combination allows the alloy to be stronger and tougher than standard austenitic steels. Duplex stainless steels like 2205 also maintain good weldability in their thickest sections, and they are much more resistant to stress corrosion cracking than standard austenitic steels.
Common Applications of 2205 Duplex Stainless Steel
Chemical Processing, Storage and Transport
Pulp and Paper Industry
Oil and Gas Extraction and Processing
Physical properties of 2205 duplex steel
Specific Heat Capacity at 212°F
Thermal Conductivity at 212°F
Elastic Modulus at 72°F
29 x 10 psi
Mechanical properties of 2205 duplex
0.2% Yield Strength, ksi
Tensile Strength, ksi
Additional information about 2205
Corrosion resistance is a critical component of materials built to withstand natural disasters. Duplex stainless steel is less prone to damage by stress corrosion cracking. It also offers good corrosion fatigue strength and its microstruction and small carbon magnitude allow duplex steel to stand up against intergranular attack. Duplex grades have high surface toughness and can stand up to conditions of heavy water, sand or salt crystals.
All of this was taken into consideration when Type 2205 was chosen for the entrances of South Ferry Station on Manhattan Island. Sealable waterproof structures like these, made of Duplex 2205, protect the subway system from water infiltration during natural disaster events like Hurricane Sandy in 2012.
High corrosion-resistant and high strength UNS S32205 can withstand the brackish or salt water impact of a coastal flood surge. This quality along with long service life and low maintenance requirements led to the use of 2205 duplex stainless steel in pedestrian bridges. The Helix in Marina Bay, Singapore and the Harbor Drive Pedestrian Bridge in San Diego, CA both use 2205 as a primary structural material providing high strength, sustainable structures with cutting-edge design.