Duplex S2205 Steel

UNS S32205 is the representative grade of super duplex stainless steel based on 26% chromium and 6% nickel composition. S32550 is designed for high strength occasion where need good resistance to chemical corrosion and attack from seawater due to it has very good pitting and crevice corrosion resistance resulting from a controlled addition of copper. Alloy S32205 is suitable for use in seawater and other chloride-containing environments.

JIS designation: SUS 329J3L

EN/DIN Numerical Equivalent:1.4507

EN/DIN Symbolical Equivalent:X2CrNiMoCuN25-6-3

SAE J405

Available Forms and Specifications

S32205 sheet/plate/coil: JIS G4304 / 4305, ASTM A240

S32205seamless pipe/tube: ASTM A789, ASTM A790

S32205 welded pipe/tube: ASTM A928, ASTM A789

S32205round bar:ASTM A479, ASTM A276

S32205 Duplex Flanges: ASTM A182 F60

Chemical composition

22.0-23.04.5-6.53.0-3.50.14-0.22.00 max1.00



Mechanical Properties

Melting range,℃1350-1390
Tensile strength, min, Mpa655
Yield strength, 0.2% offset, min, Mpa450
Elongation, A5%25
Hardness, Brinell290 MAX


Duplex stainless steels S32205 are typically used in:

Chemical processing| Chloroethylene production equipment, methanol synthesis reactor, acetic acid transport and storage

Oil and gas| Oil and gas exploration and transportation, Catalytic cracking equipment, hydrotreating equipment

Marine environments, Pollution control equipment, Pulp & paper manufacturing, Food processing plant and so on.

Alloy S32205 is widely used in oil and gas industrial, marine industrial, chemical processing and nuclear industrial due to their excellent strength and good corrosion resistance. LKALLOY is one of the leading vendors of S32205 stainless steel pipe, tube, plate and pipe fittings in the solution treated and quenched condition. Available specifications of S32550 is ASTM A240, ASTM A479, 1.4507 and so on.