1.4021 | X20Cr13 gas-nitrided
| Numeric designation | 1.4021 |
|---|---|
| Chemical designation | X20Cr13 |
| State | gas-nitrated |
| Etching | V2A-Beize @ 70 °C |
The 70 µm thick compound layer is cracked parallel to the surface. The matrix is annealed; bainite (ferrite) with spheroidal cementite. The core hardness is 270 HV0.5.
