Stainless Steel 2205 2507 Pipe
2205 and 2507 stainless steel pipes are both austenitic-ferritic duplex stainless steels that combine high strength with corrosion resistance.
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Description
Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of stainless steel 2205 2507 pipe in China. With abundant experience, we warmly welcome you to wholesale customized stainless steel 2205 2507 pipe from our factory. For price consultation, contact us.
Products Description
2205 2507 ss pipes
2205 corrosion-resistant stainless steel pipe (UNS S32205): standard duplex steel, cost-effective, suitable for most industrial scenarios, 2507 super duplex steel pipe (UNS S32750): super duplex steel, containing higher chromium, molybdenum, nitrogen, better resistance to extreme corrosion, yield strength is 2 times that of ordinary austenitic stainless steel (such as 304/316), suitable for lightweight design.
Corrosion resistant 2205 2507 duplex steel pipe
Specification
2205 Duplex Stainless Steel Pipe VS 2507 Stainless Steel Pipe
| Parameter | 2205 Duplex Stainless Steel Pipe | 2507 Super Duplex Stainless Steel Pipe |
|---|---|---|
| Chemical Composition | Cr: 21–23%, Ni: 4.5–6.5%, Mo: 2.9–3.5%, N: 0.14–0.20 | Cr: 24–26%, Ni: 6–8%, Mo: 3–5%, N: 0.24–0.32 |
| Yield Strength (MPa) | ≥450 | ≥550 |
| Tensile Strength (MPa) | ≥620 | ≥730 |
| Pitting Resistance Equivalent (PREN) | 35.4 (High resistance to pitting) | Higher (Superior resistance to pitting and crevice corrosion) |
| Chloride Stress Corrosion | Excellent (>1000 hours in 40% CaCl₂ solution) | Exceptional (Ideal for high-concentration chloride environments) |
| High-Temperature Resistance | ≤600°C (Long-term) | ≤300°C (Long-term), ≤570°C (Short-term) |
| Weldability | Good (No preheat/post-weld treatment required) | Requires controlled heat input to avoid intermetallic phases |
Application
Application of duplex steel 2205 pipes in marine engineering
Chemical and petroleum: reactor pipelines, sulfur-containing crude oil transportation systems.
Marine engineering: ship ballast water tanks, port pier support structures.
Energy: flue gas desulfurization devices in coal-fired power plants, geothermal power generation pipelines.
Application of 2507 stainless steel pipes for petrochemicals
Seawater desalination: reverse osmosis membrane components, concentrated brine transportation pipelines.
Salt chemical industry: chlor-alkali industrial equipment, brine evaporation systems.
High-end manufacturing: bridge cables, pressure vessels (requires a combination of high strength and corrosion resistance)
2205 2507 Duplex Stainless Steel Pipe Suppliers
FAQ
Q: What is the highest temperature each pipe can withstand?
A: 2205 can operate at 600°C for long periods of time, while 2507 is limited to 300°C for continuous use (short term max 570°C).
Q: Are they easy to weld?
A: 2205 has good weldability and does not require preheating/post-treatment. 2507 requires controlled heat input to avoid a brittle phase, which makes welding more complicated.
Q: Is 2507 more expensive than 2205?
A: Yes. 2507 has a higher alloy content and is specially produced, so it is much more expensive than 2205.
Q: Can I use 2205 instead of 2507 to save costs?
A: Only if your application does not involve extreme chloride exposure or high stresses.
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