1.7076 | 32CrB4 +Q Prior austenite grain boundaries
| Numeric designation | 1.7076 |
|---|---|
| Chemical designation | 32CrB4 |
| State | +Q Prior austenite grain boundaries |
| Etching | PAG QT² |
The NOT tempered screw material (tetragonal martensite) was successfully etched onto former austenite grain boundaries using “PAG QT²”. The black coating is briefly removed on a stationary, wet OPS disk (ChemTec).
Parameters:
- Etchant PAG QT² (made by Schmitz)
- 3+3 min (picture 1)
- 3+3+15 min (picture 2)
- Room temperature
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