2507 Stainless Steel Pipe (S32750 / 1.4410)
2507 is a super duplex stainless steel pipe, designed for extreme environments. It combines high strength (over 550MPa yield) with exceptional resistance to chloride corrosion, pitting, and stress corrosion cracking (SCC), making it ideal for offshore, chemical, and high-pressure applications.
Key Specifications
Standard: ASTM A789 / A790, ASME SA789 / SA790, EN 10216-5
Material: UNS S32750 (1.4410)
Size Range:
OD: 6mm – 630mm
WT: 1.0mm – 50mm
Length: 2m – 12m (customizable)
Surface: Annealed & Pickled (AP), Bright Annealed (BA)
ADVANTAGES
Typical Applications
- Offshore & Marine: Seawater piping, heat exchangers, subsea pipelines.
- Oil & Gas: Sour gas pipelines, downhole tools, FGD systems.
- Chemical Processing: Acid transport, reactors, storage tanks.
- Desalination: High-pressure RO plant piping.
- Power & Energy: Boiler tubes, heat exchangers, nuclear systems
Why Choose 2507?
It outperforms 316L in corrosion resistance and strength, making it the premium choice for projects where safety, longevity, and performance in harsh conditions are critical.
| Item | 316L (Austenitic) | 2205 (Duplex) | 2507 (Super Duplex) |
|---|---|---|---|
| Grade | UNS S31603 / 1.4404 | UNS S32205 / 1.4462 | UNS S32750 / 1.4410 |
| Type | Standard Austenitic | Standard Duplex | Super Duplex |
| Yield Strength | ~205 MPa | ~450 MPa | ~550 MPa |
| Tensile Strength | 515 MPa | 655 MPa | 800 MPa |
| PREN Value | ~24 | ~34–35 | >40 |
| Corrosion Resistance | Good for general marine & mild chemicals | Excellent against pitting & chloride SCC | Outstanding in extreme seawater & harsh acids |
| Heat Resistance | Good up to 870°C | Moderate | Moderate |
| Weldability | Excellent | Good | Good (needs proper process) |
| Cost | Lowest | Medium | Highest |
| Typical Applications | General industry, food, architecture | Oil & gas, desalination, chemical | Offshore, deep-sea, high-pressure sour gas |
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