Material number 1.2516
Treatment : untreated
Magnification : 200 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
light surface decarburization 0,10 mm deep
layer of scale on the surface
Treatment : untreated
Magnification : 200 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
strong surface decarburization 0,13 mm deep