ASTM A790 S31254 Cold Rolled Bright Surface Corrosion Resistant Stainless Steel Seamless Pipe
Price:
6.55
MOQ:
50
Delivery Time:
Negotiable
Product Description
ASTM A790 S31254 Seamless Stainless Steel Pipe (SS EN X1CrNiMoN20-18-7/ 1.4547)
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 is classified as pure austenitic stainless steel, and when carbon content is under 0.01%, it qualifies as super austenitic stainless steel.
Key Features of Inox 254SMo
Super stainless steel represents a specialized category of stainless steel, distinguished from ordinary grades by its high alloy content including elevated levels of nickel, chromium, and molybdenum. The most prominent example is 254SMo with 6% molybdenum content.
- Exceptional local corrosion resistance due to high molybdenum content
- Superior resistance to pitting corrosion (PI ≥ 40) and stress corrosion in harsh conditions including seawater, aeration, gaps, and low-speed scouring
- Suitable replacement for nickel-based alloys and titanium alloys
- Outstanding high-temperature resistance and corrosion resistance surpassing 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 comparable to nickel-based alloys and titanium
- Enhanced mechanical strength from high nitrogen content
- High ductility, impact strength, and excellent weldability
Technical Specifications
| 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, chemical equipment
- Food: Salt production, soy sauce brewing
- High Concentration Chloride Environments: Paper industry, various bleaching devices
- Other specialized applications
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Company
TSING SHAN STEEL INDUSTRIAL LIMITED
Location
NO.288,Youyi Road Xi Shan Dristrict , Wuxi, Jiangsu, China
Contact Person
Gao Ben