Description
2205 / S32205 Duplex Stainless Steel – Twice the Strength, Superior Corrosion Resistance
Engineered for performance in the harshest environments, 2205 (UNS S32205) Duplex Stainless Steel offers the perfect balance between strength and corrosion resistance. This dual-phase alloy combines the best of austenitic and ferritic stainless steels, delivering twice the yield strength of standard austenitic grades like 304 and 316—without compromising on formability or weldability.
Designed to withstand chloride-rich, corrosive environments, 2205 is the material of choice in industries like oil & gas, chemical processing, marine, and pulp & paper. It resists stress corrosion cracking, pitting, and crevice corrosion, even in aggressive conditions where other stainless steels fail.
Key Benefits:
- Exceptional strength and durability
- Outstanding resistance to chloride-induced corrosion
- Excellent weldability and formability
- Cost-effective alternative to high-nickel alloys
Applications:
Pressure vessels, heat exchangers, marine components, offshore platforms, and chemical tanks—wherever performance under pressure is critical, 2205 delivers.
Technical Details
| Description | |||
|---|---|---|---|
| Grade | 2205 | S31803 | S32304 |
| Tensile Strength ksi (min) | 90 | 90 | 600 |
| Yield Strength 0.2% ksi (min) | 65 | 65 | 58 (400) |
| Elongation % | 25 | 25 | 25 |
| Hardness (HB) MAX | 217 | 217 | 293 |
| Density lbm/in3 ( at 68°F) | 0.278 | 0.278 | Nil |
| Electrical Resistivity mW•in ( at 68°F ) | 27.6 | 27.6 | 80 |
| Electrical Resistivity mW•in ( at 212°F ) | 26.1 | 26.1 | 92 |
| Electrical Resistivity mW•in ( at 392°F ) | 25.4 | 25.4 | 100 |
| Electrical Resistivity mW•in ( at 572°F ) | 24.9 | 24.9 | 105 |
| Thermal Conductivity (BTU/hr•ft•°F) (at 68°F) | 8.7 | 8.7 | 17 |
| Thermal Conductivity (BTU/hr•ft•°F) (at 212°F) | 9.2 | 9.2 | 18 |
| Thermal Conductivity (BTU/hr•ft•°F) (at 392°F) | 9.8 | 9.8 | 19 |
| Thermal Conductivity (BTU/hr•ft•°F) (at 572°F) | 10.4 | 10.4 | 20 |
| Heat Capacity BTU/lbm•°F ( at 68°F ) | 0.112 | 0.112 | Nil |
| Heat Capacity BTU/lbm•°F ( at 212°F ) | 0.119 | 0.119 | Nil |
| Heat Capacity BTU/lbm•°F ( at 392°F ) | 0.127 | 0.127 | Nil |
| Heat Capacity BTU/lbm•°F ( at 572°F ) | 0.134 | 0.134 | Nil |
| Electrical Resistivity (in x 10-6) ( at 68°F ) | 33.5 | 33.5 | Nil |
| Electrical Resistivity (in x 10-6) ( at 212°F ) | 35.4 | 35.4 | Nil |
| Electrical Resistivity (in x 10-6) ( at 392°F ) | 37.4 | 37.4 | Nil |
| Electrical Resistivity (in x 10-6) ( at 572°F ) | 39.4 | 39.4 | Nil |