The paper is devoted to the comparison of the results in the frame of solidus and liquidus temperatures obtained bythermo analytical methods with the generally used empirically based formulas and thermo dynamical Computhermsoftware. The series of thermal analysis measurements of high temperature phase transformations of real steelgrade (S34MnV) under conditions of two analytical devices (Netzsch STA 449 F3 Jupiter; Setaram Multi High TemperatureCalorimeter (MHTC)) were carried out. Two thermo analytical methods were used (DSC and Direct ThermalAnalysis). The different weight of samples was used (2,6 g; 23 g). The liquidus and solidus temperatures for close toequilibrium conditions during heating (DSC: 1 °C/min; 2 °C/min) and during cooling (Direct Thermal Analysis: 1 °C/min) were determined and compared. Then, the discussion on the different values obtained by experiments andempirically based calculation is realised.
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