Overview of Duplex 2205
The nitrogen enhanced duplex steel Duplex 2205 (UNS S32205) is known for its exceptional strength and resistance against corrosion. With a balanced microstructure that contains between 40 and 50 percent magnetite when heated, it offers tremendous resistance to stress corrosion cracking while maintaining good durability and weldability.
2205 Duplex Stainless Steel Supplier
One of the top suppliers of duplex stainless steel is Kalpataru Piping Solutions, which provides premium materials with exceptional strength and resistance against corrosion. Our Duplex 2205 material provides high mechanical qualities and durability in challenging environments by effectively balancing iron based and austenitic microstructures.
We provide an extensive range of 2205 duplex stainless steel goods, including as pipes, tubes, fittings, flanges, and sheets, to a number of industries, including pulp and paper, chemical processing, oil and gas, maritime, and desalination plants.
Key Properties of Duplex UNS S32205
- Corrosion Resistance :
Compared to stainless steels from the 300 series, Duplex 2205 stainless steel has higher resistance to corrosion, particularly against chloride stress corrosion cracking. High resistance to pitting and crevice corrosion is offered by its high chromium, molybdenum, and nitrogen levels, which makes it ideal for saltwater marine applications, chemical manufacturing, and the food industry. - Strength & Weldability :
Duplex 2205 offers more strength over standard austenitic grades due to its balanced ferritic-austenitic structure, which ensures high fatigue resistance. While it is strong, it still melts well, allowing fabrication easy without compromising durability. - Heat Treatment & Machining :
Its mechanical qualities are restored by heating it between 1020 and 1100°C and then quickly cooling it down. Duplex 2205 cannot be hardened by heat treatment, although work hardening is a possibility. Due to its extreme strength, it can be challenging to machine and needs lower rates of cutting than the stainless steel 304.
FAQs
What is 2205 duplex stainless steel?
Duplex 2205 is a two-phase, ferritic, an austenitic stainless steel alloyed with 5–6% nickel, 22% chromium, and 3% molybdenum.
What is the difference between SS316 and Duplex 2205?
Marine grade 2205 duplex stainless steel castings contain higher levels of chromium, nickel, molybdenum, and nitrogen over 316 stainless steel castings.
What is the maximum temperature for Duplex 2205?
Duplex 2205 has good oxidation resistance at high temperatures, much like other duplex stainless steels. As Duplex 2205 is prone to embrittlement even after quick exposure to temperatures above 572°F (300°C), it is not recommended to use it above these temperatures.
What is the ASTM for Duplex 2205?
Either a seamless construction or an automated welding process could be used to construct the 2205 Duplex Stainless Pipe manufactured in accordance with ASTM A790 standards.
How to weld Duplex 2205?
Preheating to between 200 and 300°F (95 and 150°C) can be beneficial if the 2205 is thicker than around 0.625 inches (16 mm) and welding is must be done with a very low heat input (≤12 kJ/inch, 0.5 kJ/mm).
