Alloy 2205 gets the name Duplex because it is composed of two different types of grains. 40-50% of its grain structure is austenite and 50-60% of it is ferrite. It is closely related to, but much more popular than Alloy 255. In most environments, it surpasses 317L in crevice corrosion resistance. Alloy 2205 excels in chloride environments and resists hydrogen sulfide. Alloy 2205 has almost twice the strength of 316L. Due to the lower nickel and molybdenum content, it is less costly than Alloy C276. Among the places where Alloy 2205 is used include pressure vessels, heat exchangers and scrubbing systems.
Duplex 2205, UNS S31803, S32205
Alloy 2205 Fasteners
- Plate: ASTM A240
- Bar: ASTM A276
Technical Data Sheet
Industries & Applications
Ready to order or have questions?
What Our Customers Are Saying About Nickel Systems
“Thanks for all your help. Your bolts prevented a plant shut down. I’m happy and they are extremely happy.”
“Thanks, you save me AGAIN!!! That is why YOU are the BEST! Thank you so much!”
“Thank you to you and your team, for efforts above and beyond! It is much appreciated.”
“Nickel Systems is proving to be a great supplier in our supply base.”