UNS S32205 Duplex Stainless Steel
Duplex stainless is a mixed microstructure of austenite and ferrite (50/50) which has improved strength over ferritic and austenitic steel grades with similar corrosion resistance qualities.
One of the main attractions of duplex stainless steel is cost – due to the materials increased yield strength it is often possible to reduce the thickness of material making it much cheaper than a comparative austenitic stainless steel grade.
Also Duplex steel has a lower alloy content reduces production costs. Certainly cost and weight savings without loss of performance is an attractive proposition to purchasers.
Benefits of using UNS32205 Duplex Stainless Steel
- Corrosion resistance much better than that of Type 316
- Greater tensile and yield strength
- Good ductility and toughness though not as good as austenitic grades
- Good stress corrosion cracking resistance (SSC)
- Opportunity for purchases to reduce their material costs without compromising on quality
Mechanical Properties of S32205
| Description | Duplex 2205 |
|---|---|
| Proof Stress 0.2% (MPa) | 450 |
| Tensile strength (MPa) | 620 |
| Elongation A5 (%) | 20 |
| Hardness | HB: 293 HRB: 96 (according to Rockwell C Scale) |
Chemical Composition of S32205
| UNS No | S32205 |
| EN | 1.4462 |
| AISI | 2205 |
| Carbon (C) | 0.030 |
| Silicon (Si) | 1.00 |
| Manganese (Mn) | 2.00 |
| Phosphorus (P) | 0.030 |
| Sulphur (S) | 0.020 |
| Chromium (Cr) | 22.0/23.0 |
| Molybdenum (Mo) | 3.0/3.5 |
| Nickel (Ni) | 4.5/6.5 |
| Nitrogen (N) | 0.14/0.20 |