Screw with heat treatment defect
| Etching | 3% Nital |
|---|
Findings: quenching crack. Localized scaling and decarburization of the fracture surface in the area near the surface.
| Etching | 3% Nital |
|---|
Findings: quenching crack. Localized scaling and decarburization of the fracture surface in the area near the surface.