Examinations at the material 1.3505
Treatment : 30 min. 860°
C / oil
Magnification : 100 : 1
Etching medium : Klemm-I - etching period 70 seconds
Sampling / Specification : transverse / ASTM E 112
Testing result :
fine-grained martensitic microstructure
grain size : 10 - 12
hardness : 64 - 64,5 HRc
Treatment : 30 min. 1000° C / oil
Magnification : 100 : 1
Etching medium : Klemm-I - etching period 70 seconds
Sampling / Specification : transverse / ASTM E 112
Testing result :
coarse-grained martensitic microstructure
grain size : 4 - 6
hardness : 61,5 - 62 HRc