Experimental investigation of the heat capacity and enthalpy of 12Kh18N9T and 12Kh18N10T (chrome–nickel–titanium) austenitic steels in the temperature range from $300$ to $1678$ K

The results of experimental investigation of the enthalpy and of the true and mean heat capacity of 12Kh18N9T and 12Kh18N10T (chrome–nickel–titanium) austenitic stainless steels are given. The heat capacity is measured with an error of $1\%$ in the temperature range from 300 to 900 K by the method of continuous adiabatic heating. The enthalpy and mean heat capacity are investigated by the method of mixtures in the temperature range from $1200$ to $1678$ K with an error of $1\%$. The experimental results are approximated by an unified equation for the temperature range from $298.15$ to $1678$ K using the least-squares method. The errors of calculated data are estimated.