Broken helical spring - 1.7176
Treatment : quenched and tempered
Magnification : 16 : 1
Etching medium :
Sampling / Specification : fracture surface
Testing result :
small abnormality on the fracture surface
Treatment : quenched and tempered
Magnification : 40 : 1
Etching medium :
Sampling / Specification : fracture surface
Testing result :
small abnormality on the fracture surface