The Heat Capacity of Graphite constant displays the value of the heat capacity for graphite (0.720 J/g K).
Heat capacity, or thermal capacity, is defined as the amount of heat to be supplied to an object to produce a unit change in its temperature. The SI unit of heat capacity is joule per kelvin. The thermal capacity of graphite is 0.720 J/g K.
Material Properties (https://material-properties.org/graphite-density-strength-hardness-melting-point/)