1.0727 | 46S20+QT
| Numeric designation | 1.0727 |
|---|---|
| Chemical designation | 46S20 |
| State | QT |
| Etching | 3 % Nital |
Sulfur is added to free machining steels to improve machinability (here 0.15-0.25%). Long MnS lines are formed, which break the chips. Despite hardening and tempering, free ferrite is present in the pronounced segregation lines. This is inadmissible.
