1.7225 | 42CrMo4 laser hardened
| Numeric designation | 1.7225 |
|---|---|
| Chemical designation | 42CrMo4 |
| State | laser hardened |
| Etching | 3 % Nital |
The surface was surface hardened. The tetragonal martensite in the rim zone is clearly different from the cubic martensite in the quenched and tempered core. (Typical) carbon segregations are present.
Fe-Base
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
1.7076 | 32CrB4 +Q Prior austenite grain boundaries
1.1221 | C60E +QW +T Prior austenite grain boundaries
1.1191 | C45E +QW +T Prior austenite grain boundaries
1.7220 | 34CrMo4 +Q Prior austenite grain boundaries
1.7220 | 34CrMo4 +QT (12.9) Prior austenite grain boundaries
1.7076 | 32CrB4 +QT (12.9) Prior austenite grain boundaries
1.5511 | 35B2 +QT (9.8) Prior austenite grain boundaries