254 SMO Tubing S31254 Pipe Seamless Corrosion Resistant High Molybdenum Super Austenitic Stainless Steel
Price:
US $5.85-11.85 / kg
MOQ:
50 kg
Delivery Time:
Negotiable
Product Description
254SMo Super Austenitic Stainless Steel
254SMo is an austenitic stainless steel specifically developed for use in halide-containing environments such as seawater. This steel demonstrates superior performance particularly in halide-containing acids and offers excellent resistance to uniform corrosion. With carbon content below 0.02%, it qualifies as pure austenitic stainless steel, and when carbon content is under 0.01%, it can be classified as super austenitic stainless steel.
Key Features of 254SMo Stainless Steel
- High-alloy composition with elevated nickel, chromium, and molybdenum content
- 6% molybdenum content provides exceptional local corrosion resistance
- Superior resistance to pitting corrosion (PI ≥ 40) and stress corrosion
- Excellent performance in harsh conditions including seawater, aeration, gaps, and low-speed scouring
- Suitable replacement for nickel-based alloys and titanium alloys
- Enhanced high-temperature resistance and corrosion resistance compared to 304 stainless steel
- Stable austenitic metallurgical structure
- High crevice corrosion resistance in seawater, even at elevated temperatures
- Strong corrosion resistance in acidic solutions and oxidizing halide solutions
- High nitrogen content provides improved mechanical strength
- Excellent ductility, impact strength, and weldability
Technical Specifications
Material Standards
| Standard | UNS | Werkstoff Nr. | EN | SS | AFNOR |
|---|---|---|---|---|---|
| 254 SMO | S31254 | 1.4529 | X1CrNiMoCuN20-18-7 | 2378* | Z1 CNDU 20.18.06AZ* |
Chemical Composition
| Element | Content (%) |
|---|---|
| Iron, Fe | 55.69 |
| Chromium, Cr | 20 |
| Nickel, Ni | 18 |
| Molybdenum, Mo | 6.1 |
| Nitrogen, N | 0.20 |
| Carbon, C | 0.010 |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 680 MPa | 98600 psi |
| Yield strength | 300 MPa | 43500 psi |
| Modulus of elasticity | 195 GPa | 28300 ksi |
| Shear modulus | 75 GPa | 10900 ksi |
| Poisson's ratio | 0.30 | 0.30 |
| Elongation at break | 50 % | 50 % |
| Hardness, Brinell | 210 | 210 |
Applications
- Ocean: Marine structures in sea environments, seawater desalination, marine aquaculture, seawater heat exchange
- Environmental Protection: Flue gas desulfurization for thermal power generation, wastewater treatment
- Energy: Atomic power generation, comprehensive coal utilization, ocean wave power generation
- Petrochemical Industry: Refining operations, chemical equipment
- Food Industry: Salt production, soy sauce brewing processes
- High Chloride Environments: Paper industry applications, various bleaching devices
- Other industrial applications requiring superior corrosion resistance
Material Designations
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Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
Contact Person
Gao Ben