Duplex 2205, also known as UNS S32205 and also referred to as Grade 2205 Duplex, and UNS 31803, is a nitrogen-enhanced ferritic-austenitic stainless steel. Users choose Duplex 2205 for its excellent corrosion resistance along with its high strength, making it ideal for situations that demand both. It is important to note that Duplex 2205 offers much higher levels of corrosion resistance than most other austenitic stainless steels.
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Benefits and Design Features of 2205 Stainless Steel:
- High resistance to pitting and crevice corrosion, offering outstanding and uniform resistance.
- High resistance to stress corrosion cracking, fatigue, and erosion.
- Excellent in most caustic environments.
- Good weldability.
- Higher heat conductivity and lower thermal expansion compared to austenitic steels.
- Good sulfide stress corrosion cracking resistance.
- Useful up to 600°F.
2205 Duplex Stainless Steel Chemical Composition:
To be considered Duplex 2205, a stainless steel must have a chemical composition that includes:
| Element | Composition |
|---|---|
| Fe | 50.0% balance |
| Cr | 21–23.0% |
| Ni | 4.5–6.5% |
| Mo | 2.5–3.5% |
| Mn | 2.0% max |
| N | 0.08–0.20% |
| P | 0.30% max |
| C | 0.030% max |
| Si | 1.0% max |
Typical Applications:
This unique mix of materials and set of benefits makes Duplex 2205 the right choice for a number of different critical applications in a range of industries, including:
- Chemical processing, transport, and storage
- Marine and Land cargo tanks
- Biofuel production
- Food processing
- Pulp and Paper Manufacturing
- Oil and gas exploration and processing
- Waste management
- High chloride environments
- Heat exchangers, tubes, and pipes for the oil, gas, and desalination industry
- Pressure vessels for chemical and chloride processing and transport
- Cargo tanks, piping, and welding consumables for chemical tankers
Contact Continental Steel: Your Trusted 2205 Duplex Stainless Steel Supplier & Distributor
At Continental Steel, we provide Duplex 2205 in a wide range of forms, including sheet, coil, plate, plate coil, and pipe. Rest assured, all our Duplex 2205 adheres to stringent industry standards set by UNS, ASME, ASTM, ISO, and EN.