Engineer for Extreme Environments with ASTM A789 2205 Duplex Seamless Tubing

Push the boundaries of performance and reliability with our new ASTM A789 2205 Duplex Stainless Steel Seamless Tube. Designed for the most demanding applications, this tubing leverages the superior properties of duplex stainless steel to provide a solution where standard grades like 304/316 are insufficient.

Duplex 2205 (UNS S31803/S32205) features a mixed microstructure of austenite and ferrite, granting it a unique combination of high mechanical strength and exceptional resistance to corrosion. This makes it the material of choice for challenging environments where pressure, chlorides, and corrosive agents are a constant threat.

Unmatched Performance Advantages

Exceptional Corrosion Resistance: Offers superior resistance to stress corrosion cracking (SCC), pitting, and crevice corrosion, especially in chloride-containing environments, far exceeding the capabilities of 316L stainless steel.

High Mechanical Strength: Boasts more than double the yield strength of standard austenitic stainless steels (304, 316), allowing for reduced wall thicknesses and lighter weight designs without compromising pressure integrity.

Excellent Value: The combination of high strength and corrosion resistance often provides a more cost-effective solution than using higher-nickel alloys, offering better longevity and lower lifecycle costs.

Ideal for Sour Service: Certain heats are produced to meet the requirements of NACE MR0175/ISO 15156 for use in sour gas (H2S) environments, common in oil and gas production.

Technical Specifications

Standard: ASTM A789 / ASME SA789 (Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service)

Grade: UNS S31803 / S32205 (Duplex 2205)

Key Properties: Typical Minimum Yield Strength ≥ 450 MPa (65 ksi) | Typical Pitting Resistance Equivalent Number (PREN) ≥ 34

Ideal Applications

Oil & Gas: Downhole tubing, flow lines, process piping, and components in sour service.

Chemical Processing: Heat exchangers, pressure vessels, reactors, and piping handling corrosive chemicals.

Marine & Offshore: Seawater cooling systems, piping, and structural components exposed to marine environments.

Power Generation: FGD systems (flue gas desulfurization), heat recovery systems.

Pulp & Paper Industry: Processing equipment exposed to corrosive liquors.

Choose reliability for your most critical systems. Contact us today for technical data sheets, pricing, and to discuss how ASTM A789 2205 seamless tubing can solve your engineering challenges.