S31254 Stainless Steel Bar
Products Description
S31254 F44 1.4547 254SMo two-phase stainless steel corrosion resistance:
The carbon content of the S31254 stainless steel is very low, which means that there is little risk of carbide precipitation from heating.The steel can pass the Strauss Test ASTMA262 specification E, even after being sensitized for one hour at 600-1000 degrees Celsius.However, due to the high alloy content of the steel.Metal mesophase may precipitate at grain boundary in the above temperature range.These deposits do not present the risk of intergranular corrosion of the steel when used in corrosive media.Therefore it can be welded without intercrystalline corrosion.But in hot concentrated, these deposits may cause intercrystalline corrosion in the heat affected zone.In solutions containing chloride, bromide, or iodide, ordinary stainless steels are immediately subjected to local corrosion in the form of pitting corrosion, crevice corrosion, or stress corrosion cracking.However, in some cases, the presence of halides accelerates uniform corrosion.This is especially true in the presence of halides in non-oxidizing acids.In pure sulfuric acid, S31254 stainless steelhas much greater corrosion resistance than 316 normal stainless steel.However, compared with type 904L (NO8904) stainless steel at high concentration, the corrosion resistance of type S31254 steel is slightly weaker.In sulfuric acid containing chloride ions, S31254 stainless steel has the largest corrosion resistance.Due to the possibility of local and uniform corrosion, 316 ordinary stainless steel cannot be used in hydrochloric acid, but S31254 stainless steel can be used in diluted hydrochloric acid at normal temperature.There is no need to worry about pitting below the boundary.But try to avoid gaps.In fluorosilicic acid (H2SiF4) and hydrofluoric acid (HF), the corrosion resistance of ordinary stainless steel is very limited, while the S31254 stainless steel can be used over a wide range of concentrations and temperatures.
S31254 F44 1.4547 254SMo Chemical composition of stainless steel
| C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr≥ | Ni≥ | Mo≥ | N≤ |
| 0.02 | 0.80 | 1.00 | 0.03 | 0.01 | 19.5-20.5 | 4.5-6.5 | 6.0-6.5 | 0.18-0.22 |
Product Picture
Our factory
Steel Making
Ingot Production
Forged Bars
Machinary
1. Oceans: Marine structures in the marine environment, desalination, aquaculture, and heat exchange of seawater.
2. Environmental protection field: flue gas desulfurization devices for thermal power generation, wastewater treatment, etc.
3. Energy field: atomic power generation, comprehensive utilization of coal, tidal power generation, etc.
4. Petrochemical industry: refining, chemical equipment, etc.
5. Food industry: salt making, soy sauce brewing, etc.
6. High concentration chloride ion environment: papermaking industry, various bleaching devices
Packing & Delivery
Packing & Delivery
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The inner size of container is below:
-- 20ft GP: 5.8m(length) x 2.13m(width) x 2.18m(high)
-- 40ft GP: 11.8m(length) x 2.13m(width) x 2.18m(high)
-- 40ft HG: 11.8m(length) x 2.13m(width) x 2.72m(high)
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