2205 duplex stainless steel pipe supplier. Contact us to get free quote and sample!
2205 duplex stainless steel pipe is a chromium-nickel-molybdenum-nitrogen duplex stainless steel. The name "duplex" comes from its unique microstructure, which consists of approximately 50% ferrite (alpha phase) and 50% austenite (gamma phase). HT PIPE is a asme sa 790 2205 Pipe supplier with 15+ export experience. Contact us for more information and quotes for free!
aisi 1.4462 Corrosion resistance
Resistance to Pitting and Crevice Corrosion: Due to its chromium (22%), molybdenum (3%), and nitrogen (0.18%) content, 2205 offers superior corrosion resistance to 316L and 317L in most environments. The chromium, molybdenum, and nitrogen content of 2205 duplex stainless steel provides strong resistance to pitting and crevice corrosion in oxidizing and acidic solutions.
Resistance to Stress Corrosion Cracking: The stainless steel's duplex microstructure contributes to its resistance to stress corrosion cracking. Under certain conditions of temperature, stress, oxygen, and chlorides, austenitic stainless steels can undergo chloride stress corrosion. Because these conditions are difficult to control, the use of 304L, 316L, and 317L in this regard is limited.
Uniform Corrosion: Material s32205 is resistant to dilute reducing acids and high-concentration oxidizing acids, as well as low-concentration organic acids. In various corrosive media, such as 20% acetic acid and 45% formic acid, 2205 exhibits superior corrosion resistance compared to 316L.
2205 duplex stainless Heat Treatment
2205 duplex stainless steel pipe is typically supplied and used in the solution-treated state. The solution treatment process involves heating the material to 1040-1080°C (1900-1922°F), holding the temperature for a sufficient time to allow the alloying elements to fully dissolve into the matrix, and then rapidly cooling (usually using a water quench) to maintain this supersaturated solution state.
saf 2205 stainless steel Hot and Cold Forming
Ss 2205 stainless steel exhibits excellent hot working properties, typically within the 950-1100°C temperature range. During hot forming, the entire workpiece should be heated within the temperature range of 1750°F to 2250°F (954°C to 1232°C). 2205 alloy is very soft at this temperature. If the temperature is too high, 2205 alloy is susceptible to hot tearing, and below 1700°F (760°C), the austenite will fracture.
duplex ss2205 Welding Techniques
uns s32205 astm has excellent weldability and can be welded using a variety of conventional welding methods, including tungsten inert gas welding (GTAW/TIG), metal inert gas welding (GMAW/MIG), manual metal arc welding (SMAW), and submerged arc welding (SAW).
dss2205 Machining
The machinability of alloy 2205 is similar to that of austenitic stainless steel, but due to its higher strength and more pronounced tendency to work hardening, appropriate machining techniques and parameters are required. On high-speed machine tools, the feed rate and cutting speed for 2205 alloy are the same as those for 316L. If carbide cutting tools are used, the cutting speed is reduced by approximately 20% compared to 316L.
a790 s32205 Surface Preparation and Cleaning
Surface cleaning of 2205 duplex stainless steel pipe is extremely important, as any surface contamination (such as iron particles or oil) can cause localized corrosion at high temperatures. After machining, pickling and passivation are recommended to remove surface contaminants and form a complete passivation film.
Secure Your Order with HT Pipeline: Your Trusted Duplex Pipe Supplier
Managing critical infrastructure projects requires a supply partner that delivers uncompromising quality control and complete material transparency.
- Diverse Production Matrix: We supply heavy-wall ASTM A790 UNS S32205 seamless pipes for high-pressure systems, as well as large-diameter ASTM A790 welded duplex pipes for transport lines.
- Rigorous Quality Control Testing: All materials undergo positive material identification (PMI), ultrasonic examination, hydrostatic pressure testing, and intergranular corrosion testing (such as ASTM A923 Method C or ASTM G48 pitting tests) upon request.
- Comprehensive Documentation: Shipments are backed by complete EN 10204 3.1 Mill Test Certificates (MTC), full heat number traceability, and third-party inspection (TPI) logs.
Looking to replace failing stainless lines with high-strength duplex alloys? Contact the HT Pipeline sales office today to receive a prompt factory price quote, customized dimensional lead times, or detailed technical specifications!
