Phone:+86-577-88877003(export department)
ABS,BV,CCS,DNV,LR,M650,PED,.. Certificated Factory of Seamless Pipe and tube

S32205 Seamless Duplex Steel Pipe

HomeProducts & servicesDuplex(Super Duplex) Stainless Steel Pipe And Tube S32205 Seamless Duplex Steel Pipe
S32205 Seamless Duplex Steel Pipe

S32205 Seamless Duplex Steel Pipe

S32205 Seamless Duplex Steel Pipe, also known as Duplex 2205, is a nitrogen-enhanced duplex stainless steel that offers a superior combination of high strength and excellent corrosion resistance. Seamless pipes and tubes made from this material are widely used in various demanding industrial applications where standard austenitic stainless steels are inadequate. Its balanced chemical composition and microstructure provide a desirable set of properties that make it a cost-effective solution for many corrosive environments,known for their excellent mechanical strength and durability in demanding environments.
①　STANDARD: ASTM A789/ ASTM A790/ ASTM A928/ ...

②　OD RANGE : 6-720 MM

③　THICKNESS RANGE: 1-65 MM
Inquiry Whatsapp

Detailed Introduction

UNS S32205 SAF2205 S22253 022Cr23Ni5Mo3N Chemical Composition

Grade

C

Mn

P

S

Si

Ni

Cr

Mo

N

S32205

≤0.03

≤2.00

≤0.03

≤0.02

≤1.00

4.50~6.50

22.00~23.00

3.00-3.50

0.14-0.20

UNS S32205 SAF2205 S22253 022Cr23Ni5Mo3N Mechanical Properties

Grade

Tensile Strength ksi(MPa)

Yield Strength ksi (MPa)

Elongation (%)

Hardness HBW

Hardness HRC

S32205

≥95(655)

≥65(450)

≥25

≤290

≤30

UNS S32205 SAF2205 S22253 022Cr23Ni5Mo3N Applications

  • UNS S32205, also known as Duplex 2205, is a duplex stainless steel alloy with excellent properties. Let’s explore its applications in various industries:

    1. Seawater Systems:
      • UNS S32205 is commonly used in seawater systems due to its high resistance to pitting and crevice corrosion.
      • It ensures durability in marine environments.
    2. Chemical Process Equipment:
      • In chemical processing, this alloy finds applications in pressure vessels, high-pressure storage tanks, and high-pressure pipelines.
      • Its corrosion resistance and strength make it valuable in handling aggressive chemicals.
    3. Heat Exchangers and Fittings:
      • Heat exchangers, fittings, and other components benefit from UNS S32205’s good weldability.
      • It is used in the chemical processing industry.
    4. FGD Scrubber Systems:
      • Flue gas desulfurization (FGD) scrubber systems utilize UNS S32205.
      • Its resistance to corrosive gases ensures efficient pollution control.
    5. Pulp Mill Digesters and Bleach Washers:
      • In the paper industry, this alloy is employed in pulp mill digesters and bleach washers.
      • Its mechanical strength and corrosion resistance contribute to reliable performance.
    6. Food Process Equipment:
      • UNS S32205 is suitable for food processing equipment.
      • Its acid resistance ensures product purity and safety.
    7. Oil Field Piping:
      • In the oil and gas industry, this alloy is used for oil field piping.
      • Its properties withstand harsh conditions in oil exploration and production.

    Remember that UNS S32205’s combination of corrosion resistance, strength, and weldability makes it a versatile material across various industrial applications.


S32205 Seamless Duplex Steel Pipe Key Features and Advantages

Exceptional High Strength: It offers a yield strength that is approximately double that of conventional austenitic stainless steels like 316L, allowing for the design of lighter, thinner-walled components.

Superior Stress Corrosion Cracking (SCC) Resistance: The duplex structure provides outstanding resistance to chloride SCC, a common failure point for standard austenitic stainless steels (like 304L/316L) in warm, chloride-rich environments.

Excellent Localized Corrosion Resistance: The high content of Chromium (≈22% ),Molybdenum (≈3% ), and Nitrogen (N) provides superior resistance to pitting andcrevice corrosion, particularly effective in marine or brackish water environments.

Good Weldability: The material exhibits good weldability, though filler metal (like ER2209) is typically required, and it retains excellent corrosion properties in the as-welded condition.

High Energy Absorption/Toughness: It retains good toughness, including down to temperatures as low as −50∘C (−58∘F).

Low Thermal Expansion: Its coefficient of thermal expansion is lower than that of austenitic stainless steels, which helps reduce thermal stress and distortion in complex structures.


UNS S32205 SAF2205 S22253 022Cr23Ni5Mo3N Material Summary

Duplex S32205 are the most common duplex grades in the market. They have very good resistance to localized corrosion and stress corrosion cracking in combination with high mechanical strength. They are widely used in oil & gas, hydro power, pressure vessels, pulp & paper, structural components and chemical tankers. The alloys are not intended to be used at temperatures above 300°C due to embrittlement..

S32205 are characterized by:

High resistance to stress corrosion cracking in halide containing environments.

High resistance to pitting and crevice corrosion.

High resistance to general corrosion.

High mechanical strength.

High resistance to erosion corrosion and corrosion fatigue.


Standard download

Online Inquiry

If you have any enquiry about quotation or cooperation,please feel free to email us at or use the following enquiry form. Our sales will contact you within 24 hours. Thank you for your interest in our products.