254SMO Stainless Steel Coil
SSM supplies 254SMO stainless steel coils (UNS S31254 / 1.4547) with dimensions 1.5 × 1219 mm, cold-rolled and manufactured according to ASTM A240 / A480. 254SMO offers outstanding resistance to pitting, crevice corrosion, and chloride stress corrosion cracking, making it ideal for marine and chemical processing applications.
254SMO Stainless Steel Coil
254SMO (UNS S31254 / DIN 1.4547) is a super austenitic stainless steel designed for exceptional resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. It is developed for use in highly corrosive environments, particularly in seawater, chloride-containing, and acidic chemical conditions.
Specification Information
Material: 254SMO (UNS S31254 / 1.4547)
Dimension: 1.5 × 1219 mm × Coil
Process: Cold Rolled
Standards: ASTM A240 / A480, EN 10088-2, JIS G4305
Surface Finish: 2B / BA / No.4 / HL / Mirror (customizable)
Typical Chemical Composition (% by weight)
| Element | Content |
|---|
| C | ≤ 0.02 |
| Cr | 19.5 – 20.5 |
| Ni | 17.5 – 18.5 |
| Mo | 6.0 – 6.5 |
| N | 0.18 – 0.22 |
| Cu | 0.5 – 1.0 |
| Fe | Balance |
Key Properties
| Property | Description |
|---|
| Corrosion Resistance | Excellent performance in chloride-rich, seawater, and strong acid environments |
| Pitting Resistance (PREN ≥ 42) | Much higher than 316L and 904L |
| Stress Corrosion Cracking Resistance | Outstanding resistance in marine and chloride media |
| Strength and Toughness | Higher than standard austenitic stainless steels, with excellent ductility |
| Weldability | Excellent; suitable for conventional welding methods (use matching 254SMO filler metal) |
Typical Applications
Desalination plants and heat exchangers
Marine engineering and offshore structures
Chemical and petrochemical equipment (evaporators, reaction towers)
Pulp and paper processing equipment
Environmental protection and flue gas cleaning systems
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