1.4021 | X20Cr13 gas-nitrided, fatigue fracture
| Numeric designation | 1.4021 |
|---|---|
| Chemical designation | X20Cr13 |
| State | gasnitriert, Schwingbruch |
Fatigue fracture on an uncovered but nitrided screw thread. The basic structure is annealed; bainite (ferrite) with spherical cementite. The core hardness is 270 HV0.5.
Edge zone
1.0718 | 11SMnPb30 +C carbonitrided
Hot-dip galvanising
Ir-MMO coatings on titanium anodes
1.8519 | 31CrMoV9 +QT Long-term plasma-nitrided
1.8550 | 34CrAlNi7-10 +QT Long-term plasma-nitrided
1.2343 | X38CrMoV5-1 +QT Long-term plasma-nitrided
1.1181 | C35E +N nitrocarburized
1.1181 | C35E +N gas nitrided
1.7225 | 42CrMo4 +HL nitrocarburised
1.7225 | 42CrMo4 +HL gas-nitrided