Drawn-in drawing agent - 1.4301
Treatment : solution annealed
Magnification : 6,5 : 1
Etching medium :
Sampling / Specification : wire surface
Testing result :
surface in the area of defect
an area of the surface was not sharpened because
here a light undersize is existing
Treatment : solution annealed
Magnification : 25 : 1
Etching medium :
Sampling / Specification : wire surface
Testing result :
grain boundary attack on the rod wire surface has
to be
observed in the defect range ; it still is from
the rod wire
surface before drawing and sharping