Grades
2205
Duplex · EN 1.4462
Nearly double the yield strength of austenitic grades. Thinner section for the same load, so less weight.
Not used above 300 °C; welding procedure is more demanding than austenitics.
Chemical composition
| Element | % |
|---|---|
| C | max 0,030 |
| Si | max 1,00 |
| Mn | max 2,00 |
| P | max 0,035 |
| S | max 0,015 |
| Cr | 21,0 – 23,0 |
| Ni | 4,5 – 6,5 |
| Mo | 2,50 – 3,50 |
| N | 0,10 – 0,22 |
Mechanical properties
| Property | Value |
|---|---|
| Rp0,2 (MPa) | min 460 |
| Rm (MPa) | 640 – 840 |
| A (%) | min 25 |
| HB | max 270 |
| Density (g/cm³) | 7,8 |
| Magnetic | Yes |
Values are published EN 10088 ranges. The real figure for an order is on that heat certificate.