Material number 1.2550
Treatment : spheroidised
Magnification : 200 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
surface decarburization in form of
carbide decrease 0,09 mm deep
Treatment : spheroidised
Magnification : 1000 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse / SEP1520
Testing result :
FA 1.9 CG 2.0 - 2.1 PA
3.0
partly coarse carbides on the grain boundaries
and in the segregations