S32750/2507 Super Duplex Stainless Steel: Extreme Corrosion Resistance for Hostile Environments
S32750 (branded as 2507) is a super duplex stainless steel engineered for extreme conditions, containing 25% chromium, 7% nickel, 4% molybdenum, and nitrogen. This high-alloy composition grants superior corrosion resistance and strength compared to standard duplex grades like 2205.
Its duplex structure (austenite-ferrite) provides exceptional resistance to chloride stress corrosion cracking, pitting, and crevice corrosion—critical for environments with formic acid, acetic acid, or dilute hydrochloric acid. With a design pressure up to 200 bar and temperature tolerance up to 300°C, it outperforms 904L in chloride-contaminated sulfuric acid solutions. Its tensile strength exceeds 690 MPa, making it ideal for high-pressure applications.
S32750/2507 is indispensable in offshore oil and gas equipment, desalination plants, and chemical processing reactors handling chloride-rich fluids. It is also used in flue gas scrubbers and marine components, where resistance to seawater corrosion is paramount. Its enhanced weldability and workability ensure reliability in complex industrial systems.
Its duplex structure (austenite-ferrite) provides exceptional resistance to chloride stress corrosion cracking, pitting, and crevice corrosion—critical for environments with formic acid, acetic acid, or dilute hydrochloric acid. With a design pressure up to 200 bar and temperature tolerance up to 300°C, it outperforms 904L in chloride-contaminated sulfuric acid solutions. Its tensile strength exceeds 690 MPa, making it ideal for high-pressure applications.
S32750/2507 is indispensable in offshore oil and gas equipment, desalination plants, and chemical processing reactors handling chloride-rich fluids. It is also used in flue gas scrubbers and marine components, where resistance to seawater corrosion is paramount. Its enhanced weldability and workability ensure reliability in complex industrial systems.