Duplex Steel S32205 Flanges

Duplex Steel S32205 Flanges About

Duplex steel flanges are piping components made from duplex stainless steel, an alloy with a mixed austenitic-ferritic microstructure in roughly equal proportions. These flanges are also known as duplex SS flanges or DSS flanges. These flanges consist of around 22% chromium, 5% nickel, 3% molybdenum, and 0.15% nitrogen. This composition gives the material a minimum tensile strength of 620 MPa and the yield strength of 450 MPa, both higher than standard austenitic grades. The dual-phase structure also provides strong resistance to chloride stress corrosion cracking, pitting, and crevice corrosion. The Duple

Wide Range of Flange Types and Sizes

Duplex Steel S32205 Flanges come in an extensive selection including weld neck, slip-on, blind, socket weld, lap joint, threaded, and long weld neck types. They accommodate diverse piping systems, ranging from DN15 to DN1200 diameters and offering thicknesses from 5 mm to 60 mm. Custom dimensions and industry-standard widths up to 48 inches ensure compatibility with global requirements across oil & gas, petrochemical, and marine sectors.


Exceptional Material Properties and Standards

Crafted with a duplex stainless steel composition of 22% chromium, 5-6% nickel, and 3% molybdenum, S32205 flanges achieve excellent mechanical strength (620 MPa tensile) and hardness (290 HB). They offer robust resistance to pitting, crevice, and stress corrosion cracking, standing up to temperatures near 300C. Complying with international ASTM A182/ASME SA182 standards, every flange undergoes rigorous non-destructive and hydrostatic testing to assure reliability.


Reliable Testing, Traceability, and Packaging

Each flange is subjected to thorough ultrasonic, radiography, hydrostatic, PMI, mechanical, and chemical testing, ensuring quality and safety for critical operations. Markings include size, pressure rating, material grade, heat number, and manufacturer's logo for full traceability. Products are securely packed in plywood cases or pallets, or customized packaging as per client requirements, facilitating safe global delivery and installation.