1.2067 | 102Cr6 +QW +T Annealed on cementite network, superheat hardened and tempered
| Numeric designation | 1.2067 | 1.3505 | SAE52100 | AMS6440 |
|---|---|
| Chemical designation | 102Cr6 | 100Cr6 |
| State | +QW +T Annealed on cementite network, superheat hardened and tempered |
| Etching | 3% Nital |
This hypereutectoid steel (bar material with ⌀ = 16 mm) was first annealed to form a cementite network and subsequently austenitized at 950 °C for 30 min, quenched in oil and finally tempered at 180 °C for 2 hours. The austenitizing temperature was above the temperature intended for this material (830 – 850 °C), so it was overheated. The microstructure consists of coarsely needled, tempered martensite and residual austenite.
The core hardness is 711 ± 4 HV1.
Condition:
- 950 °C / 60 min / oven
- 950 °C / 30 min / oil – 180 °C / 2 h / air
