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.
