Insufficient through-hardening - 1.8519
Treatment : quenched and tempered
Magnification : 12,5 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
good sample
evenly microstruktur
from the edge up to the core
Treatment : quenched and tempered
Magnification : 12,5 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
bad sample
unevenly microstructure
ca. 2 mm deep differently formed surface area