Corrosion Resistant 254SMo Plate with High Molybdenum Content and Cold Rolled Finish
Price:
5.65
MOQ:
50
Delivery Time:
Negotiable
Product Description
254SMo Chemical Composition 254SMo Rolled Alloys 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 offers excellent resistance to uniform corrosion. With carbon content below 0.02%, it qualifies as a pure austenitic stainless steel, and when carbon content is under 0.01%, it can be classified as a super austenitic stainless steel.
Features of Inox 254SMo
Super stainless steel represents a specialized category of stainless steel distinguished from conventional types. As a high-alloy stainless steel containing elevated levels of nickel, chromium, and molybdenum, the most prominent example is 254SMo with 6% molybdenum content. The high molybdenum concentration provides exceptional local corrosion resistance, along with superior resistance to pitting corrosion (PI ≥ 40) and stress corrosion in demanding conditions including seawater, aeration, gaps, and low-speed scouring. This makes 254SMo an excellent alternative to nickel-based alloys and titanium alloys.
Furthermore, 254SMo exhibits outstanding high-temperature resistance and corrosion resistance capabilities that surpass those of 304 stainless steel. From a metallurgical perspective, special stainless steels like 254SMo maintain a stable austenitic microstructure.
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. Additionally, 254SMo offers high ductility, impact strength, and excellent weldability. The elevated molybdenum content results in higher oxidation rates during annealing, producing a slightly rougher surface after pickling compared to conventional stainless steels, though this does not compromise the material's corrosion resistance.
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 SMO™.
| 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