ASTM A789 S31803/ 2205 Duplex Stainless Steel Tube for General Application
Alloy 2205 is a second-generation, nitrogen-alloyed duplex stainless steel (ferritic-austenitic). It offers an excellent combination of both strength and corrosion resistance over a wide range of applications. It finds applications due to both excellent corrosion resistance and high strength.
The approximate 50/50 ferrite-austenite structure provides excellent chloride pitting and stress corrosion cracking resistance, with roughly twice the yield strength of the standard austenitic stainless grades.
Wall Thickness available:
Schedule 5S - Schedule XXS (heavier on request)
Chemical Composition:
UNS
Designation | Composition, % |
C
Max | Mn
max | P
max | S
max | Si
max | Ni | Cr | Mo | N |
| S32205 | 0.03 | 2 | 0.03 | 0.02 | 1 | 4.5-6.5 | 22-23 | 3.0-3.5 | 0.14-0.20 |
Heat Treatment Requirements:
| UNS Designation | Temperature | Quench |
| S32205 | 1870-2010 °F [1020-1100°C] | Rapid cooling in air or water |
Mechanical Properties:
| Grade | Tensile Strength, min., ksi [MPa] | Yield Strength, min., ksi [MPa] | Elongation in 2 in., or 50mm, min, % | Hardness, Max Brinell |
| S32205 | 95 [655] | 70 [485] | 25 | 290 |
Equivalent Material:
| Grade | UNS
No | Old British | Euronorm | SwedishSS | JapaneseJIS |
| BS | En | No | Name |
| 2205 | S31803 / S32205 | 318S13 | - | 1.4462 | X2CrNiMoN22-5-3 | 2377 | SUS 329J3L |
Applications:
-Chemical Processing, Transport and Storage
-Oil and Gas Exploration and Offshore Rigs
-Mil and Gas Refining
-Marine Environments
-Pollution Control Equipment
-Pulp & Paper Manufacturing
-Chemical Process Plant
Referenced Documents:
ASTM Referenced Standards
A 450/A 450M Specification for General requirements for carbon, Ferritic Alloy, and Austenitic alloy steel tubes
A 480/A 480M Specification for general requirements for flat-rolled stainless and heat-resisting steel plate, sheet, and strip
A 941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
E 527 Practice for numbering metals and alloys (UNS)
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ASTM A789 S31803 / 2205 Duplex Stainless Steel Tube For General Application Images
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