Duplex stainless steel
2205 Duplex Stainless Steel
2205 is a duplex stainless steel that combines higher strength than common austenitic grades with resistance to several chloride-related corrosion mechanisms. Successful use depends on the service environment, product standard, fabrication controls and heat treatment condition.
Final material selection remains the responsibility of the project design authority. Confirm product form, governing standard and current availability with sales.
Specification overview
| Material standard | Confirm with sales |
|---|---|
| Product form and dimensions | Confirm with sales |
| Heat treatment condition | Confirm with sales |
| Testing and documents | Confirm with sales |
Selection note
State chloride concentration, temperature, pressure, media and fabrication requirements; duplex grade selection cannot be made from grade name alone.
Characteristics
- Mixed austenitic-ferritic microstructure
- Higher strength than common 300-series austenitic grades
- Resistance to chloride stress-corrosion cracking in many suitable environments
- Fabrication and welding require duplex-specific control
Available forms
Common finishes
Typical applications
- Chemical process equipment
- Heat exchangers
- Water and chloride-bearing systems
- Energy equipment
- Structural process components subject to design review