Flat washer
| Chemical designation | Unterlegscheibe | 
|---|---|
| State | Flat washer | 
| Etching | 3 % Nital | 
Very fine-grained, purely ferritic construction steel with 200 HV0.3 (converted to approx. 640 MPa) at the core and 330 HV0.3 at the rim due to work hardening.
| Chemical designation | Unterlegscheibe | 
|---|---|
| State | Flat washer | 
| Etching | 3 % Nital | 
Very fine-grained, purely ferritic construction steel with 200 HV0.3 (converted to approx. 640 MPa) at the core and 330 HV0.3 at the rim due to work hardening.