Corrosion Resistant 254SMo Stainless Steel Plate with High Molybdenum Content for Super Austenitic Applications
Price:
8.85
MOQ:
50
Delivery Time:
Negotiable
Product Description
S31254 Stainless Steel Specifications F44 Plate
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 also 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 less than 0.01%, it qualifies as super austenitic stainless steel.
Features of Inox 254SMo
Super stainless steel represents a specialized category of stainless steel distinguished from ordinary grades by its high alloy content of nickel, chromium, and molybdenum. The most prominent example is 254SMo with 6% molybdenum content, which provides exceptional local corrosion resistance. This stainless steel offers superior resistance to pitting corrosion (PI ≥ 40) and stress corrosion in demanding conditions including seawater, aeration, gaps, and low-speed scouring, making it an excellent alternative to nickel-based alloys and titanium alloys.
Additionally, 254SMo exhibits outstanding high-temperature resistance and corrosion resistance capabilities that surpass those of 304 stainless steel. From a metallurgical perspective, special stainless steel maintains a stable austenitic structure.
Extensive field testing and practical experience confirm 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 in 254SMo provides enhanced mechanical strength compared to other austenitic stainless steels. The material also features high ductility, impact strength, and excellent weldability. While the high molybdenum content results in increased oxidation during annealing and a rougher surface after pickling compared to conventional stainless steels, this does not compromise the material's corrosion resistance properties.
Specification
| Standard | UNS | Werkstoff Nr. | EN | SS | AFNOR |
|---|---|---|---|---|---|
| 254 SMO | S31254 | 1.4529 | X1CrNiMoCuN20-18-7 | 2378* | Z1 CNDU 20.18.06AZ* |
Chemical Properties
The chemical composition of stainless steel grade 254 SMO™ is outlined in the following table.
| 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
The following table shows mechanical properties of stainless steel grade 254 SMOTM.
| 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 ion environment: paper industry, various bleaching devices
- Other industrial 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