A brief review in the field of investigation of properties of austenitic alloys is presented. New instruments developed for nondestructive testing of the phase composition and magnetic properties of austenitic corrosion-resistant steels at the Institute of Metal Physics, Ural Division, Russian Academy of Sciences, are described. The first section of the paper is devoted to such directions as “ferritometry.” Instruments intended for the testing of magnetic characteristics of slightly magnetic steels, such as the magnetic permeability and susceptibility, are described in the second section of the paper.