This paper presents an analysis method of quantitative microstructure of me
tal based on image analysis theory. Haralick statistics. A neural network h
as been used to realise the correlation between microstructure and mechanic
al properties (here means hardness). By the example of Jominy samples of a
0.45% carbon steel (C45) it was shown that the evaluation of complex micros
tructure can be realised and a correlation to mechanical properties is poss
ible.