Stress crack at a helical spring - 1.8159
Treatment : quenched and tempered
Magnification : 6,5 : 1
Etching medium :
Sampling / Specification : wire surface
Testing result :
longitudinal defect on the surface
Treatment : quenched and tempered
Magnification : 12,5 : 1
Etching medium :
Sampling / Specification : transverse
Testing result :
stress crack 2,34 mm deep