with the help of pre alloy Fe Si Cu Mg, with 10-16% Mg, added into the reaction chamber in a proportion of 1.1%
of the treated cast iron. The microstructure in raw state is perlito-feritic typical for a cast iron with geometrically
regular nodular form. The casted raw iron had the following mechanical properties: Rm=660 [N/mm2]; A = 8.4 [%];
HB = 225.