- Excellent resistance to pitting and crevice corrosion
- Superior resistance to chloride stress corrosion cracking
- Very high strength (higher than 2205)
- Outstanding performance in seawater environments
- Long service life in aggressive conditions
Duplex 2507 / S32750 / 1.4410 /F53
Super Duplex 2507 stainless steel round bar is a high-performance duplex stainless steel combining austenitic and ferritic structures.
It offers exceptional corrosion resistance and very high mechanical strength, making it suitable for the most demanding environments such as offshore and seawater systems.
Key Features
- Excellent resistance to pitting and crevice corrosion
- Superior resistance to chloride stress corrosion cracking
- Very high strength (higher than 2205)
- Outstanding performance in seawater environments
- Long service life in aggressive conditions
Applications
Super Duplex 2507 round bars are widely used in:
- Offshore oil and gas platforms
- Seawater systems
- Desalination plants
- Chemical processing equipment
- Marine engineering
View more stainless steel products
316L vs 2205 guide
316L vs 17-4PH
Duplex 2205/ S31803/1.4462/F51
Best Stainless Steel for Seawater Applications
Chemical Composition (Typical)
| Element | Content (%) |
|---|---|
| Chromium (Cr) | 24.0 – 26.0 |
| Nickel (Ni) | 6.0 – 8.0 |
| Molybdenum (Mo) | 3.0 – 5.0 |
| Nitrogen (N) | 0.24 – 0.32 |
High chromium and molybdenum provide excellent corrosion resistance.
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 800 MPa |
| Yield Strength | ≥ 550 MPa |
| Elongation | ≥ 15% |
Much higher strength than austenitic stainless steels.
Corrosion Resistance
2507 stainless steel offers superior resistance to:
- Seawater corrosion
- Pitting and crevice corrosion
- Chloride stress corrosion cracking
It performs better than Duplex 2205 in highly aggressive environments.
Comparison with Other Grades
| Grade | Feature | Application |
|---|---|---|
| 2507 | Highest corrosion resistance + strength | Offshore / seawater |
| 2205 | Balanced performance | General oil & gas |
| 254SMO | Extreme corrosion resistance | Chemical / seawater |
| 316 | Moderate corrosion resistance | Mild environments |
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