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254SMO hot rolled stainless steel plate
254SMO hot rolled stainless steel plate
Haosteel is professional manufacturer and supplier of 254SMO hot rolled stainless steel plate. Quality guaranteed, On-time delivery, After-sales warranty.
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Standard: |
ASTM A240 A666 |
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Grade: |
254SMO/f44/1.4547/s31254 |
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Delivery: |
Cold rolled Hot rolled |
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Surface: |
Black/Bright/2B/BA/ NO.1/Hairline/Mirror |
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Thickness: |
2.5-100mm |
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Width: |
1m-3m |
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Length: |
2m-12m |
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Mill: |
Tisco, Jisco, Baosteel, etc. |
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Delivery time: |
15 days in common |
254SMO Stainless Steel Plate,1.4547 Stainless Steel Plate,S31254 Stainless Steel Plate,F44 Stainless Steel Plate
Description:
254SMO is an austenitic stainless steel. Because of its high molybdenum content, it has very high resistance to spot corrosion and crevices corrosion. 254SMO stainless steel was developed and developed for use in halide containing environments such as seawater. 254SMO also has good uniform corrosion resistance, especially in halide containing acids, superior to ordinary stainless steel. Its C contains <0.03%, so it is called pure austenitic stainless steel. Super stainless steel is a kind of special stainless steel, first in the chemical composition is different from ordinary stainless steel, is a high alloy stainless steel containing high nickel, high chromium, high molybdenum. Among them, 254SMo containing 6%Mo has very good local corrosion resistance, good pitting resistance (PI≥40) and stress corrosion resistance under the conditions of seawater, aeration, gap and low speed scour. It is a substitute material for Ni-based alloy and titanium alloy. Secondly, in the performance of high temperature or corrosion resistance, with more excellent high temperature or corrosion resistance, is not replaced by 304 stainless steel. In addition, from the classification of stainless steel, special stainless steel metallographic structure is a stable austenitic metallographic structure.
Because this special stainless steel is a kind of high alloy material, so in the manufacturing process is quite complex, generally people can only rely on the traditional process to make this special stainless steel, such as perfusion, forging, calendering and so on.
National standards: UNS S31254, DIN/EN 1.4547, ASTM A280, ASME SA-280
Supporting welding materials: ErNICRMO-3 wire, EnICRmo-3 electrode
Chemical composition:
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|
% |
Ni |
Cr |
Mo |
Cu |
N |
C |
Mn |
Si |
P |
S |
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254SMO |
MIN |
17.5 |
19.5 |
6 |
0.5 |
0.18 |
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|
|
|
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MAX |
18.5 |
20.5 |
6.5 |
1 |
0.22 |
0.02 |
1 |
0.8 |
0.03 |
0.01 |
High temperature resistant
1. Extensive field experiments and extensive experience have shown that even at slightly higher temperatures, 254SMO has a very high resistance to crevice-corrosion in seawater, which only a few types of stainless steel have.
2. 254SMO's corrosion resistance in acidic and oxidizing halide solutions such as those required for paper bleaching production is comparable to that of the most resistant nickel-base and titanium alloys.
3. Because of its high nitrogen content, 254SMO has a higher mechanical strength than other kinds of austenitic stainless steel. In addition, 254SMO has high ductility and impact strength as well as good weldability.
4. The high molybdenum content of 254SMO enables it to have a higher oxidation rate at annealing, resulting in a rougher surface than ordinary stainless steel after pickling. But this has no adverse effect on the corrosion resistance of the steel.
Application:
1. Ocean: Marine structures in the Marine environment, seawater desalination, mariculture, heat exchange of seawater, such as thin-walled condensing pipes cooled by seawater in power plants, desalination equipment, even in equipment where seawater may not flow, etc.
2. Environmental protection field: thermal power generation flue gas desulfurization device, waste water treatment, the main parts are: absorber tower body, flue, door panels, inner parts, spray system, etc.
3. Energy: atomic power generation, comprehensive utilization of coal, tidal power generation, etc.
4. Petrochemical industry: oil refining, chemical equipment, petrochemical equipment, such as bellows in petrochemical equipment, etc.
5. Food field: salt making, desalination industry, such as salt making or desalination equipment, soy sauce brewing, etc.
6. High concentration chloride ion environment: papermaking industry, pulp and paper bleaching equipment, such as pulp digesters, bleaching equipment, filter scrubber barrels and press rollers and other bleaching equipment
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