1.7131 | 16MnCr5 +N Normalised at 950 °C (furnace cooling)
| Numeric designation | 1.7131 |
|---|---|
| Chemical designation | 16MnCr5 |
| State | Normalised at 950 °C (furnace cooling) |
| Etching | 3% Nital |
This hypoeutectoid steel (bar material with ⌀ = 30 mm) with 0.14 % carbon (measured with OES) was normalised at 950 °C and then slowly cooled in the furnace. The microstructure consists, typical for this material and heat treatment condition, of ferrite and fine- and ultra-fine-grained pearlite. The edge layer is covered with scale (dark grey) and shows surface decarburisation. The average core hardness is 150 HV5.
