TY - JOUR N2 - In this paper an attempt to determine the relationship between the electrical resistivity and the tensile strength and hardness of cast iron of carbon equivalent in the range from 3.93% to 4.48%. Tests were performed on the gray cast iron for 12 different melts with different chemical composition. From one melt poured 6 samples. Based on the study of mechanical and electro-resistive determined variation characteristics of tensile strength, hardness and resistivity as a function of the carbon equivalent. Then, regression equations were developed as power functions describing the relationship between the resistivity of castings and their tensile strength and hardness. It was found a high level of regression equations to measuring points, particularly with regard to the relationship Rm=f(ρ). The obtained preliminary results indicate the possibility of application of the method of the resistance to rapid diagnostic casts on the production line, when we are dealing with repeatable production, in this case non variable geometry of the product for which it has been determinated before a regression equation. L1 - http://www.czasopisma.pan.pl/Content/101922/PDF/afe-2016-0078.pdf L2 - http://www.czasopisma.pan.pl/Content/101922 PY - 2016 IS - No 4 DO - 10.1515/afe-2016-0078 KW - Resistance KW - Grey cast iron KW - Tensile strength KW - NDT KW - Electrical resistivity A1 - Bieroński, M. A1 - Kuś, R. A1 - Krasa, O. A1 - Koza, M. A1 - Książek, D. PB - The Katowice Branch of the Polish Academy of Sciences DA - 2016 T1 - Evaluation of the Mechanical Properties of Gray Cast Iron Using Electrical Resistivity Measurement UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/101922 T2 - Archives of Foundry Engineering ER -