Material number 1.2379
Treatment : spheroidised
Magnification : 100 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
surface decarburization 0,30 mm deep
bright not so strong etchenable border ; directly at the
surface there is a light carburization through the
annealing
Treatment : spheroidised
Magnification : 100 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
no surface decarburization
directly at the surface there is a light carburization
through the annealing