Abstract
	In the article is presented the methodology of analytical calculation of molar and specific heat capacity of BÖHLER S600 high-speed steel. 
	The chemical content (in weight percentages) of the steel, heating or cooling curves is generally the input of the calculation. Heating and cooling curves can be acquired applying by probes of the Wolfson test type, whereas the probes are made of BÖHLER S600 (B.S600). 
	Mathematical equations described in the article are the active part of the model. The thermal dependence of B.S600 molar heat capacity and the thermal dependence of B.S600 specific heat capacity are main results. 
	The heat capacity model presented in the article takes 8 chemical components of BÖHLER S600 steel into account (C, Si, Mn, Cr, Mo, V, W, Fe) and heating curves of the probes are applied into the heat capacity model.
	Heating process of the probes in the LM 112.10 electrical resistance furnace up to 1126 °C was repeated and recorded six times and the average value was taken into account.
	Steel allotropic changes are remembered in the heat capacity model, no external stress and strain states as a load were applied. The rule of Neumann and Kopp was applied as a basic rule necessary for creating of the heat capacity model. Computing procedures were realised by program software Microsoft Excel.
	The calculation methodology and the heat capacity model as a function of temperature described in the article can be helpfully applied to calculate a heat capacity for a chosen high speed steel, tool steel or steel in a dependency of the steel chemical content and as a function of the heating or cooling process.