1.5511 | 35B2 +QT (9.8) Prior austenite grain boundaries
| Numeric designation | 1.5511 |
|---|---|
| Chemical designation | 35B2 |
| State | +QT (9.8) Prior austenite grain boundaries |
| Etching | PAG HT |
The highly tempered and Cr-free screw material was successfully etched onto former austenite grain boundaries using “PAG HT”. The copper precipitate is polished off on a stationary, wet OPS disc (ChemTec). Depending on the alloy, 25% ammonia and a cotton swab are required to remove the copper precipitate.
Parameters:
- Etchant PAG HT (made by Schmitz)
- 3 min
- room temperature
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