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The numerical modelling of the strand solidifying process in the CC machine is mostly based on the finite element method (FEM). Complexity of this issue causes difficulties on the stage of model's verification. Beside the wide range of possible numerical errors associated with the mentioned method, the problem of impact of disturbances generated by the models parameters also appears. These parameters can be divided into two groups: material properties of cast steel grade and the technological parameters of casting process. At the stage of verification of model computations carried out for a particular steel grade, important information is the knowledge of model sensitivity to input parameters. In this paper, a number of simulations showing the qualitative and quantitative impact of key parameters of continuous casting process on the final result of calculations is presented. The conclusions from the carried out analysis will be helpful in planning experimental researches aimed to create a database for implementation of specific simulations. Model calculations used to accomplish assumed goal were based on a set of data collected from industrial equipment. For the purpose of the work, the scope of conducted measurements and data collection has been extended. A number of control measurements in the field of determining the key material parameters such as: specific heat, latent heat, density, conductivity etc. Some of them were specified as a function of temperature. The purpose of such a precise designation all of the parameters was necessity to define credible reference point for the analysis. In the summary the technical availability of obtaining the necessary data and recommendation for their standardization is analyzed.