904L: Outstanding Expression of Corrosion Resistance.
904L super austenitic stainless steel, as a representative of low-carbon and high-nickel, molybdenum austenitic stainless acid-resistant steel, is favored in the industry for its excellent activation-passivation ability and excellent corrosion resistance. This article will provide an in-depth analysis of its chemical composition and its wide range of applications in different fields.
Chemical composition of 904L:
Nickel (Ni): 23-28%.
Chromium (CR): 19-23%.
Molybdenum (Mo): 4-5%.
Copper (Cu): 1-2%.
Carbon (c): 002%
Manganese (Mn): 2%.
Silicon (Si): 1%.
Phosphorus (p): 0045%
Sulfur (s): 0035%
This carefully blended composition content gives 904L Super Austenitic Stainless Steel its superior performance, making it excellent in corrosive environments.
Relationship between ingredients and areas of application:
Outstanding acid resistance:
The high nickel content in 904L gives it excellent resistance to pitting and crevice corrosion. This makes it the material of choice in petroleum, petrochemical equipment, and other fields to cope with strong acid corrosion in harsh environments.
Chloride resistance:
In the fields of marine engineering and seawater treatment equipment, 904L performs well, and the copper element in its composition improves the corrosion resistance in chloride ion media, ensuring that the equipment can operate stably for a long time in humid marine environments.
Chemical Processing Industry:
For pressure vessels and chemical equipment in the chemical processing industry, the low carbon content of 904L eliminates the risk of intergranular corrosion, while the high chromium and nickel composition ensures excellent resistance to a wide range of corrosive media.
Food equipment: In the field of food such as salt production and brewing, the 904L is ideal for storing and handling food due to its hygienic and corrosion-resistant properties.
Power generation industry: 904L excels in power plant flue gas desulfurization units, and its corrosion resistance to strong acids such as sulfuric acid makes it an ideal material for processing desulfurization equipment.
Conclusion: 904L has won a wide range of applications due to its excellent activation-passivation ability and excellent corrosion resistance. Its unique ingredient content, especially the reasonable combination of high nickel, high chromium and copper elements, makes it play a unique advantage in many fields. In the future, the 904L will continue to play an important role in a wide range of industries involving strong acids and corrosive climates.