Scratch after grinding - 1.4104
Treatment : annealed - ground
Magnification : 25 : 1
Etching medium :
Sampling / Specification : steel bar surface
Testing result :
scratch on the ground surface
going in lengthways direction
Treatment : annealed - ground
Magnification : 50 : 1
Etching medium :
Sampling / Specification : transverse
Testing result :
scratch 0,03 mm deep
the edges of the defect are raised lightly
the defect has arisen after grinding