| Production Standard: | ASTM A789， ASME SA789， EN10216-5 ， GOST9941-91， JIS 3459， DIN17458 | Material Grade: | S31803/S32205， SAF2205 |
|---|---|---|---|
| Type: | Seamless/ Welded/ U- Bending | Surface: | Pickled And Annealed， Polished， Bright Annealed |
| High Light: | SAF2205 Duplex Stainless Steel Tube， Pickled Duplex Stainless Steel Tube， Duplex Stainless Steel Welded Pipe | ||
ASTM A789 S31803/ SAF2205 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)
