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S31254 Cold Rolled Corrosion Resistant 254SMo Stainless Steel Plate for Harsh Environments
Product Details
| Model NO. | S31254 | Shape | Flat |
|---|---|---|---|
| Technique | Cold Rolled | Surface Treatment | Bright |
| Specification | 1220*2440, 1500*3000, 1500*6000, 2000*6000mm | Production Capacity | 50000kgs |
| Iron Content | 55.69% | Chromium Content | 20% |
| Nickel Content | 18% | Molybdenum Content | 6.1% |
| Nitrogen Content | 0.20% | Carbon Content | 0.010% |
| Tensile Strength | 680 MPa | Yield Strength | 300 MPa |
| Elongation At Break | 50% | ||
| Highlight | S31254 Stainless Steel Plate,Cold Rolled 254SMo Plate,Corrosion Resistant Super Austenitic Stainless Steel Plate |
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Product Description
S31254 Stainless Steel Specifications F44 Plate
254SMo is an austenitic stainless steel developed for use in halide-containing environments such as seawater. This steel demonstrates superior performance particularly in halide-containing acids and features excellent resistance to uniform corrosion. With carbon content below 0.02%, it is classified as pure austenitic stainless steel, and when carbon content is below 0.01%, it qualifies as super austenitic stainless steel.
Features of Inox 254SMo
Super stainless steel represents a specialized category of high-alloy stainless steel containing elevated levels of nickel, chromium, and molybdenum. The most prominent example is 254SMo with 6% molybdenum content. This composition provides exceptional local corrosion resistance, including excellent resistance to pitting corrosion (PI ≥ 40) and stress corrosion in demanding conditions such as seawater, aeration, gaps, and low-speed scouring. These properties make 254SMo a viable alternative to nickel-based alloys and titanium alloys.
The steel exhibits superior high-temperature resistance and corrosion resistance compared to standard 304 stainless steel. Metallurgically, special stainless steels maintain a stable austenitic structure. Extensive field testing confirms that 254SMo maintains high crevice corrosion resistance in seawater, even at elevated temperatures—a characteristic shared by only a few stainless steel types.
In acidic solutions and oxidizing halide solutions used in paper bleaching applications, 254SMo demonstrates corrosion resistance comparable to the most resistant nickel-based alloys and titanium alloys. The high nitrogen content contributes to enhanced mechanical strength relative to other austenitic stainless steels, while maintaining high ductility, impact strength, and excellent weldability.
Specification
Standard Designations
| 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 |
254SMo 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, chemical equipment
- Food: Salt production, soy sauce brewing
- High Concentration Chloride Environments: Paper industry, various bleaching devices
- Other industrial applications
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