Applied to seawater desalination systems, seawater treatment facilities, offshore plants, and marine equipment.
Grades
Duplex
Stainless
Duplex stainless combining ferritic and austenitic structures
offers high strength and exceptional chloride corrosion
resistance for seawater desalination industries.
Grades
- S31803
- S32205
- S32750
- S32760
- 329J3L
- 329J4L
- S32101
- S32304
Applications
Applied to chemical processing facilities and oil and gas plants where corrosion resistance and high strength are required.
Applied to shipbuilding, flue gas desulfurization systems, nuclear facilities, and other fields requiring high strength and corrosion resistance.
Chemical Composition
| International Steel Designation | Chemical Composition Requirements by ASTM, % (Max) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| UNS | ASTM | JIS | EN | C | Cr | Ni | Mo | N | Others |
| S31803 | - | - | 1.4462 | 0.03 | 21 ~ 23 | 4.5 ~ 6.5 | 2.5 ~ 3.5 | 0.08 ~ 0.2 | - |
| S32205 | 2205 | SUS 329J3L | 1.4462 | 0.03 | 22 ~ 23 | 4.5 ~ 6.5 | 3 ~ 3.5 | 0.14 ~ 0.2 | - |
| S32304 | 2304 | - | 1.4362 | 0.03 | 21.5 ~ 24.5 | 3 ~ 5.5 | 0.05 ~ 0.6 | 0.05 ~ 0.2 | Cu: 0.05 ~ 0.60 |
| S32750 | 2507 | - | 1.4410 | 0.03 | 24 ~ 26 | 6 ~ 8 | 3 ~ 5 | 0.24 ~ 0.32 | Cu: 0.50 max |
| S32760 | Zeron 100 | - | 1.4501 | 0.03 | 24 ~ 26 | 6.0 ~ 8.0 | 3 ~ 4 | 0.20 ~ 0.30 | W: 0.5 ~ 1.0, Cu: 0.5 ~ 1.0 |
| S32101 | 2101 | - | 1.4162 | 0.04 | 21 ~ 22 | 1.35 ~ 1.7 | 0.1 ~ 0.8 | 0.2 ~ 0.25 | Mn: 4.0 ~ 6.0, Cu: 0.1 ~ 0.8 |
| S32506 | 329J4L | SUS 329J4L | - | 0.03 | 24 ~ 26 | 5.5 ~ 7.2 | 3 ~ 3.5 | 0.08 ~ 0.20 | W: 0.05 ~ 0.30 |