Duplex steels are such steels that have a two-phase structure of ferritic and austenitic portions. As a result, The characteristics of chromium and chromium nickel steels are combined. Duplex steels therefore show a higher strength than austenitic steels. At the same time, They are characterised by a higher ductility.
The difference between Super Duplex Steels and Standard Duplex is the higher portion of chromium, Nickel and Molybdenum. It is characterised by a particularly high corrosion resistance and high strength. Super Duplex Steel is therefore suitable for demanding fields of application such as the desalination of seawater.
| UNS | EN |
|---|---|
|
S31803 / S32205
|
1.4462
|
|
S32750
|
1.4410
|
|
S32760
|
1.4501
|