Wuxi Jinlai Mechanical Processing Co., Ltd.
Wuxi Jinlai Machinical Processing Co., LTD
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2205 Duplex Stainless Steel Equivalent Standards:
Chemical Composition (%) of 2205 Duplex Stainless Steel Plate
| C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 2205 (S31803) | 0.03 | 2.0 | 1.0 | 0.03 | 0.02 | 21.0- 23.0 | 2.5-3.5 | 4.5-6.5 | 0.08-0.20 |
| 2205 (S32205) | 0.03 | 2.0 | 1.0 | 0.03 | 0.02 | 22.0-23.0 | 3.0-3.5 | 4.5-6.5 | 0.14-0.20 |
Mechanical Properties of 2205 Duplex Stainless Steel Plate
| Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (HB) MAX |
| 2205 | 90 | 65 | 25 | 217 |
Physical Properties of 2205 Duplex Stainless Steel Plate
| Density lbm/in3 |
Electrical Resistivity mW•in |
tdermal Conductivity (BTU/hr•ft•°F) |
Heat Capacity BTU/lbm•°F |
Electrical Resistivity (in x 10-6) |
|
| at 68°F | 0.278 | 27.6 | 8.7 | 0.112 | 33.5 |
| at 212°F | 26.1 | 9.2 | 0.119 | 35.4 | |
| at 392°F | 25.4 | 9.8 | 0.127 | 37.4 | |
| at 572°F | 24.9 | 10.4 | 0.134 | 39.4 |
Alloy 2205 (UNS S32305/S31803) is a 22% chromium, 3% molybdenum, 5-6% nickel, nitrogen alloyed duplex stainless steel plate with high general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness.
Alloy 2205 duplex stainless steel plate provides pitting and crevice corrosion resistance superior to 316L or 317L austenitic stainless steels in almost all corrosive media. It also has high corrosion and erosion fatigue properties as well as lower thermal expansion and higher thermal conductivity than austenitic.
2205 Duplex Stainless Steel Plate Processing – Hot Forming:
Most Duplex 2205 producers recommend a maximum hot forming temperature between 2010 and 2100°F (1100 to 1150°C). If the shape of the work piece is not compact, the edges may be significantly cooler than the bulk, and there is risk of cracking in the cooler regions.
2205 Duplex Stainless Steel Plate Processing – Cold Forming:
Duplex 2205 has shown good formability in a variety of fabrications. The high strength of Duplex 2205 can pose problems. Even when the equipment has sufficient power, allowance must be made for higher spring-back caused by the grade’s high strength.
2205 Duplex Stainless Steel Plate Applications:
| 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 |
| Temperature, °F | 70 | 212 | 392 | 572 |
| Coefficient* of Thermal Expansion, in/in°F x 10-6 | - | 8 | 8 | 8 |
| Thermal Conductivity Btu • ft/ft2 • hr • °F |
8 | 9 | 10 | 11 |
| Modulus of Elasticity, Dynamic psi x 106 | 28 | 26 | 25 | 24 |
| Ultimate Tensile Strength, ksi | 95 |
| 0.2% Yield Strength, ksi | 65 |
| Elongation, % | 25 |
| Hardness MAX, Brinell | 290 |
| Temperature, °F | 212 | 302 | 392 | 482 |
| Ultimate Tensile Strength, ksi | 86 | 83 | 80 | 78 |
| 0.2% Yield Strength, ksi | 52 | 49 | 46 | 44 |
| PREn | Critical Pitting Temperature, CPT | |
| 2205 | 34 | 130°F |
| 316L | 24 | 62°F |