As part of a continuing study of the mechanical behavior of materials which have temperature‐dependent properties, electric analog experiments on a nonlinear Maxwell Model Material are described. The circuit that is used contains thermistor elements which simulate the temperature‐dependent viscosity of the mechanical model. The inertial and elastic elements are simulated by electronic integrators instead of inductors and capacitors which assures the ideality of the elements and increases the versatility of the analog. The work leads to the identification of a natural “property” of the material which has advantages over the use of the viscosity coefficients and elastic moduli alone. The results show how, because of heating, the responses of the model change from elastic to viscous as the severity or duration of the excitation increases. The heating also leads to stress reduction in the trailing part of the disturbance. Since elements of the analog may be identified with elements of atomic scale models of material, the work relates to material development programs as well as to mechanical design studies.