1.7027 | 20Cr4 with dual-phase structure
| Numeric designation | 1.7027 |
|---|---|
| Chemical designation | 20Cr4 |
| State | dual-phase structure |
| Etching | 3% Nital |
This 20Cr4 was partially austenitised and quenched. The former pearlite particles were transformed into martensite by subsequent quenching. The former pearlite lamellae can still be partially recognised as a substructure. The edge is decarburised to a depth of approx. 400 µm.
Fe-Base
1.5507 | 23MnB3 +QT (10.9)
1.5507 | 23MnB3 +QT (8.8)
1.5507 | 23MnB3 +Q
Shipbuilding steel E40
1.5511 | 35B2 +QT (9.8)
1.7076 | 32CrB4 +QT (12.9)
1.7076 | 32CrB4 +Q
1.1221 | C60E +I Prior austenite grain boundaries
1.1274 | C100S +QW +T Prior austenite grain boundaries
1.1269 | C85S +QW +T Prior austenite grain boundaries