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904L Super Austenitic Stainless Steel

Jan,Tue,2022

904L super austenitic stainless steel is the austenitic stainless steel with acid resistance, low carbon and high nickel. 904L super austenitic stainless steel has the good ability of passivation transition and corrode resistance. And it has good corrode resistance in the non-oxide acid such as sulfuric, acetic, formic and phosphoric. It has good pitting resistance in the chloride medium and has good crevice corrosion and stress corrosion resistance. 904L super austenitic stainless steel is suitable for various concentrations of sulfuric acid below 70°C. 904L stainless steel is the fully austenitic. Contracting with austenitic stainless steel with high molybdenum, 904L is insensitive to the precipitation of ferrite and alpha phase.

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Application areas of 904L stainless steel:

Petroleum and petrochemical equipment, such as reactors in petrochemical plants.

Sulfuric acid storage and transportation equipment, such as heat exchanger.

The flue gas desulfurization device of power plant is mainly used in the following parts: the tower body of the absorption tower, the flue, the shutter, the internal parts, the spray system, etc.

Scrubbers and fans in organic acid treatment systems.

Seawater treatment devices, seawater heat exchangers, paper industry equipment, sulfuric acid, nitric acid equipment, acid production, pharmaceutical industry and other chemical equipment, pressure vessels, food equipment.

Pharmaceutical plants: centrifuges, reactors, etc.

Plant food: soy sauce jars, cooking wine, salt jars, equipment and dressings.

904L is the matching steel grade for the strong corrosive medium of dilute sulfuric acid.

904L stainless steel is the stainless steel currently used by Rolex. It is widely used in the chemical industry and has strong corrosion resistance. 904L stainless steel is harder and wear-resistant. This property allows the surface to be highly polished, which in turn matches the gloss of other precious metals.


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