Duplex 2205 and Super Duplex 2507 weld neck flanges are high-performance stainless steels featuring a dual-phase microstructure of austenite and ferrite. 2205 provides excellent resistance to stress corrosion cracking, while 2507 offers enhanced strength and pitting resistance for extreme marine or acidic environments. The Weld Neck design, with its tapered hub, ensures superior stress distribution and leak-proof reliability in high-pressure offshore and chemical processing systems.
Technical Attributes: Duplex & Super Duplex WN
Material Grades,Duplex 2205 (UNS S31803/S32205) :
Material Grades,Super Duplex 2507 (UNS S32750) :
Standard,ASTM A182 / ASME SA182 :
Dimensional Spec,ASME B16.5 / B16.47 :
Flange Type,Weld Neck (Type 11) :
Pressure Class,"150#, 300#, 600#, 900#, 1500#, 2500# :"
Size Range,"1/2"" to 48"" (NPS) :"
Yield Strength (2205),Min. 450 MPa (65 ksi) :
Yield Strength (2507),Min. 550 MPa (80 ksi) :
PREN Value (2507),≥40 (Pitting Resistance Equivalent) :
Corrosion Resistance,High resistance to Chloride SCC :
Facing Type,RF (Raised Face) / RTJ (Ring Joint) :
Weld Preparation,37.5° Bevel (Butt-weld) :
Manufacturing,Forged and Solution Annealed :
Bore Profile,Matches Pipe Schedule (SCH) :
Temperature Range,-50°C to 300°C (Ductility limit) :
Traceability,Full MTC per EN 10204 3.1 :
Primary Industries,"Desalination, Offshore Oil, Chemical :"
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
