ASTM A790 UNS S32205 Pipes,S32205 Duplex Stainless Steel Pipe & Tube
High-Strength, Corrosion-Resistant Pipes for Offshore & Seawater Applications
ASTM A790 UNS S32205 pipes and tubes are super duplex stainless steel products designed for high-pressure, high-strength, and highly corrosive environments. Manufactured in accordance with ASTM A790, UNS S32205 pipes offer excellent resistance to pitting, crevice corrosion, and chloride stress corrosion cracking, combined with high mechanical strength.
S32205 super duplex stainless steel pipes are widely used in oil & gas, offshore platforms, desalination plants, chemical processing, and marine engineering, where both strength and corrosion resistance are critical.
What Is ASTM A790?
ASTM A790 is the standard specification for seamless and welded ferritic/austenitic (duplex) stainless steel pipes intended for general corrosive service and high-temperature applications.
Download the ASM A 790A 790M Standard
We are a professional supplier and exporter of ASTM A790 UNS S32205 Pipes,S32205 Super Duplex Stainless Steel Pipe & Tube.These pipes & tubes are available in various grades, specification, size & thickness to our clients requirement
This specification covers seamless and straight-seam welded ferritic/austenitic steel pipe intended for general corrosive service, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures
Material Grade: UNS S32205 (Super Duplex Stainless Steel)
UNS S32205 is a super duplex stainless steel with a balanced microstructure of approximately 50% austenite and 50% ferrite, offering superior performance compared to standard duplex grades such as S31803.
S32205 DUPLEX SEAMLESS PIPES,ASTM A790 S32205 S31803 PIPE SPECIFICATION.
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex 2205 | 1.4462 | S32205 |
ASTM A790 UNS S32205 Pipe Chemical Composition :
| Ni | Cr | Mo | Mn | Si | C | N | S | P | Fe | |
| MIN | 4.5 | 22.0 | 3.0 | – | – | – | 0.14 | – | – | – |
| MAX | 6.5 | 23.0 | 3.5 | 2.0 | 1.0 | 0.03 | 0.2 | 0.02 | 0.03 | Balance |
ASTM A790 UNS S32205 Pipe Dimensional Tolerance :
| Nominal pipe size up to 4 = ± 0.79 mm | 5 thru 8 = + 1.58 mm / – 0.79 mm 10 thru 18 = + 2.37 mm / – 0.79 mm | 20 thru 24 = + 3.18 mm / – 0.79 mm |
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| Wall Thickness All Diameters = – 12.5% + tolerance not specified |
Length + 6.40 mm / – 0 mm |
Weight Weight = + 10% / – 1.5% |
- AVAILABLE DIAMETER: 1/8”~24”
- AVAILABLE THICKNESS: SCH10S,SCH40, SCH XS, SCH 60,SCH80S,SCH120,SCH1160,SCH XXS
- LENGTH: 6METERS FIXED LENGTH OR BY ORDER
- ANNEALING AND PICKLING
- ENDS: PLAIN ENDS, BEVELED ENDS
- TOLERANCE OF THICKNESS: +10%/-5%
- PACKING: ENDS WITH PLASTIC CAPS, THEN BUNDLES OR WOODEN CASES
- MARKING: LOGO,SMLS,ASTM A790 S322205/S31803 OD XXX THK XXX 6METERS LOT
ASTM-A790-UNS-S32205-Duplex-Stainless-Steel-Pipe-Tube
Heat Treatment
ASTM A790 UNS S32205 pipes are supplied in solution annealed condition, followed by rapid quenching to ensure:
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Correct duplex microstructure
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Maximum corrosion resistance
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Stable mechanical properties
S31803 vs S32205 Duplex Stainless Steel Pipe Comparison
UNS S31803 and UNS S32205 are both duplex stainless steel grades widely used for corrosive and high-strength piping applications. Although they share similar chemical composition and microstructure, S32205 is an enhanced version of S31803 with tighter composition control and improved corrosion resistance.
ASTM A790 UNS S32205 super duplex stainless steel pipes and tubes deliver an excellent combination of high strength, superior corrosion resistance, and long service life for offshore, marine, and desalination applications. Fully compliant with ASTM A790, S32205 pipes are a trusted solution for critical pressure and corrosive environments.
