1.2067 | 102Cr6 +QW +T Annealed on cementite network, hardened and tempered (quenchant: water)
| Numeric designation | 1.2067 | 1.3505 | SAE52100 | AMS6440 |
|---|---|
| Chemical designation | 102Cr6 | 100Cr6 |
| State | +QW +T Annealed on cementite network, hardened and tempered (quenchant: water) |
| Etching | 3% Nital |
This hypereutectoid steel (bar stock with ⌀ = 16 mm) was first annealed on cementite network (initial condition: see Case Study 13-10) and subsequently austenitized at 840 °C for 30 min, quenched in oil and finally tempered at 180 °C for 2 hours.
The microstructure consists of coarsely needled, tempered martensite with bright, finely dispersed carbides. Slight segregation lines and some non-metallic inclusions (MnS) are visible in the longitudinal direction.
The core hardness is 763 ± 2 HV1.
Condition:
- 950 °C / 60 min / oven
- 840 °C / 30 min / oil – 180 °C / 2 h / air
