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254SMO Stainless Steel Seamless Pipe
254SMO Stainless Steel Seamless Pipe
Haosteel is professional manufacturer and supplier& of 254SMO Stainless Steel Seamless Pipe . Qual'ity guaranteed, On-time delivery, After-sales warranty.
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Standard: |
ASTM A269/A312/A213/A249/A554 |
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Grade: |
254SMO/S31254/1.4547/F44 |
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Delivery: |
Cold rolled Hot rolled |
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Surface: |
Mill, Pickled, HL, Polished, Mirror |
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Thickness: |
0.2mm - 30mm |
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Outer Diameter |
1mm--630mm |
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Length: |
6000mm or as customer request |
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Mill: |
Tisco, Jisco, Baosteel, etc. |
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Delivery time: |
15 days in common |
254SMO Stainless Steel Pipe,1.4547 Stainless Steel Pi×pe,S31254 Stainless Steel Pipe,F44 Stainless Steel Pipe
Description:
254SMO is an austenitic stainless steel. Because of its hig✘h molybdenum content, it has very high resistance to spot corrosion γand crevices corrosion. 254SMO stainless steel was developed and develoβped for use in halide containing environments such as seawater. &n✔bsp;254SMO also has good uniform corrosion resistance, especially i×n halide containing acids, superior to ordinary stainless steel. &δnbsp;Its C contains <0.03%, so it is called pure austenitic stainless αsteel. Super stainless steel is a kind of speciaδl stainless steel, first in the chemical composition iσs different from ordinary stainless steel, is a higλh alloy stainless steel containing high nickel, high chromium, high molybdenum.&n↑bsp; Among them, 254SMo containing 6%Mo has very good local corrosion resistance,↓ good pitting resistance (PI≥40) and stress corrosion resistance under the condition$s of seawater, aeration, gap and low speed scour. It is a substitute materδial 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 stainle÷ss steel metallographic structure is a stable austenitic metallographic structure.
Because this special stainless steel is a kind of high alloy material, so in the manufactεuring process is quite complex, generally people can only rely on th<e traditional process to make this special stainless steel, such as perfusion, forging, c✔alendering 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:
Grade |
% |
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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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 f ew types of stainless steel have.
2. 254SMO's corrosion resistance in acidic and oxidizing halide solu™tions such as those required for paper bleaching production is compδarable 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, 254S€MO 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 a t annealing, resulting in a rougher surface than ordinary stainless steel after picklin€g. 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 seawaβter in power plants, desalination equipment, even in equipment whe<re seawater may not flow, etc.
2. Environmental protection field: thermal power generγation flue gas desulfurization device, waste water treatment, the main parts are: absorber tower body, flue, door panels, inner pa©rts, spray system, etc.
3. Energy: atomic power generation, comprehensive utilization of coal, tid al power generation, etc.
4. Petrochemical industry: oil refining, chemical equipment, petrochem₽ical equipment, such as bellows in petrochemical equi pment, etc.
5. Food field: salt making, desalination industry, such as s★alt making or desalination equipment, soy sauce brewing, etc.&nφbsp;
6. High concentration chloride ion environment: papermaking industry, pulp and pa₽per bleaching equipment, such as pulp digesters, bleaching equipment, filter≠ scrubber barrels and press rollers and other bleaching equipment
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