Ferrite in the heat treated structure - 1.2249
Treatment : quenched and tempered
Magnification : 100 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
light underhardened :
heat treated structure with local ferrite in the
segregations
Treatment : quenched and tempered
Magnification : 100 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
faultless hardened :
ferrite free heat treated structure