1.7077 | 36CrB4 +Q hardened
| Numeric designation | 1.7077 |
|---|---|
| Chemical designation | 36CrB4 |
| State | +Q hardened |
| Etching | PAG QT² und 3% Nital |
The 36CrB4 screw is in the hardened (untempered) condition. The micrographs show successful etching to the former austenite grain size using our specially developed etchant PAG QT². We have listed different etch times here:
- PAG QT² (a): 3+3+15min
- PAG QT² (b): 3+3+15+180 min
- PAG QT² (c): 3+3+15+180 min+30s OPS
- 3% Nital 8 seconds
The microstructure is tetragonal martensite. No fine carbide precipitates are visible compared to the tempered conditions (8.8 | 10.9 | 12.9).
The hardness is 532 HV 10.
