2507 is a ferritic austenitic (duplex) stainless steel that combines the most beneficial properties of many ferritic and austenitic steels. Due to its high chromium and molybdenum content, the steel has excellent resistance to pitting corrosion, crevice corrosion, and uniform corrosion The dual phase microstructure ensures that the steel has high resistance to stress corrosion cracking and also has high mechanical strength
The high chromium and molybdenum content of 2507 gives it strong resistance to overall corrosion of organic acids such as formic acid and acetic acid. 2507 alloy also has strong resistance to inorganic acids, especially those containing chlorides
Compared with 904L, 2507 has stronger corrosion resistance to diluted sulfuric acid mixed with chloride ions. 904L is an austenitic alloy specifically designed to resist pure sulfuric acid corrosion
316L grade cannot be used in hydrochloric acid environments as it may experience localized or overall corrosion. 2507 can be used in diluted hydrochloric acid environments and has strong resistance to spot damage and crack corrosion
The lower carbon content of 2507 greatly reduces the risk of carbide precipitation between grains during heat treatment, therefore, this alloy has strong resistance to intergranular corrosion related to carbides
The complex structure of 2507 gives it strong resistance to stress corrosion cracking. Due to its higher alloy content, 2507 has better corrosion resistance and strength than 2205
Cracks are almost inevitable in construction and other aspects, which makes stainless steel more susceptible to corrosion in chloride environments. 2507 has strong resistance to crack corrosion The isocorrosion curve of 2507 in sulfuric acid containing 2000ppm chloride ions is 0.1 mm/year; The isocorrosion curve in hydrochloric acid is 0.1 mm/year
Application areas: pulp and paper industry, seawater desalination, flue gas purification, heat exchangers, chemical tanker pipeline systems, seawater sy