Biomaterials have to fulfill many quality requirements. Biotolerance in contact biomaterial with tissues and physiological liquids is one of the main criteria of evaluation of material. A good corrosion resistance of biomaterials limits the adverse effects on biomaterial-tissue interface [1,2].
Cr-Ni-Mo type austenitic steels are commonly used as implants for orthopedic, maxillo-facial surgery as well as in production of different kinds of stents. Cr-Ni-Mo steels can be used as guide wires used in endourological treatment such as percutaneous nephrolithotripsy and ureterorenoscopy [3]
. Austenitic steels are the materials of a lowest corrosion resistance among the metallic biomaterials [2]. Mechanical properties and corrosion resistance are determined by chemical composition and the technology of production as well. The homogeneous structure, obtained in heat treatment and plastic working processes, is crucial for corrosion resistance. An important issue is to determine the influence of the ratio of deformation during metalforming on material corrosion resistance.
The aim of the work was to evaluation of corrosion resistance of wires of Cr-Ni-Mo steel. The evaluation of influence of the deformation of wire on the pitting corrosion resistance was established.