Duplex 2205 is a two-phase, ferritic, austenitic 22% chromium, 3% molybdenum, 5 to 6% nickel alloyed stainless steel. It is the most widely used duplex stainless steel grade and is characterized by high yield strength, double that of the standard austenitic stainless steel grades. It also demonstrates good fatigue strength, as well as outstanding resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion in severe environments.
Chemical Composition
Material | UNS | Standard | C | Mn | P | S | Si | Ni | Cr | Mo | N | Cu |
2205 | S32205 | ASTM A789 | 0.030 | 2.00 | 0.030 | 0.020 | 1.00 | 4.5-6.5 | 22.0-23.0 | 3.0-3.5 | 0.14-0.20 | ... |
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Size Chart
OD | Wall (inch) | Materials | Standard | Working Pressure (MPa) | Length |
1/8" | 0.02,0.028,0.035 | Austenitic steel 304L (UNS S30403) Austenitic steel 316L (UNS S31603) Duplex 2205 (UNS S32205 & S31803) Super Duplex 2507 (UNS S32750) Incoloy 825 (UNS N08825) Inconel 625 (UNS N06625) | ASTM-A 269 ASTM-A 632 ASTM-A 789 ASTM-B 704 | 60-120 Mpa | Customized |
3/16" | 0.02,0.028,0.035,0.049 | ||||
1/4" | 0.02,0.028,0.035,0.049,0.065.0.083 | ||||
5/16" | |||||
3/8" | |||||
1/2" | |||||
* OD: Up to 1 inch |