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254SMo Stainless Steel Seamless Pipe Cold Rolled with Bright Surface Hollow Bar
Product Details
| Model Number | 1.4547/S31254 254SMO | Shape | Round |
|---|---|---|---|
| Technique | Cold Rolled | Surface Treatment | Bright |
| Outer Diameter | 6-630mm | 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% |
| Brinell Hardness | 210 | ||
| Highlight | 254SMo Stainless Steel Pipe,Cold Rolled Seamless Pipe,Bright Surface Hollow Bar |
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Product Description
254SMo Stainless Steel Tubes & Bars
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 while also providing excellent resistance to uniform corrosion. With carbon content below 0.02%, it qualifies as pure austenitic stainless steel, and when carbon content falls below 0.01%, it can be classified as super austenitic stainless steel.
Key Features of 254SMo Stainless Steel
As a super stainless steel, 254SMo represents a high-alloy stainless steel containing elevated levels of nickel, chromium, and molybdenum. The 6% molybdenum content provides exceptional local corrosion resistance, including excellent resistance to pitting corrosion (PI ≥ 40) and stress corrosion in demanding conditions like seawater, aeration, gap environments, and low-speed scouring. This makes it a viable alternative to nickel-based alloys and titanium alloys.
- Superior high-temperature and corrosion resistance compared to standard 304 stainless steel
- Stable austenitic metallurgical structure for consistent performance
- High crevice corrosion resistance in seawater, even at elevated temperatures
- Strong corrosion resistance in acidic solutions and oxidizing halide solutions
- Enhanced mechanical strength due to high nitrogen content
- High ductility, impact strength, and excellent 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 processing equipment
- Food Industry: Salt production, soy sauce brewing processes
- High Chloride Environments: Paper industry applications, various bleaching devices
- Other specialized industrial applications
Product Identification
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