[en] The magnetomechanical effect has been found to influence the temperature of inductively heated ferritic steel specimens in a systematic way. This effect can be significant in strain controlled low cycle fatigue, creep-fatigue experiments, and in multiaxial yield surface studies. The influence of stress on the magnetic permeability of the specimen is a straightforward response of the alloy tested while the variation in temperature that results is not. The actual temperature variation depends on such factors as the specimen geometry, the induction coil geometry, the design of the specimen grips, the location of the control thermocouple, and the response characteristics of the temperature controller. The influence of several of these experimental parameters has been determined to provide guidance concerning how strain controlled low cycle fatigue, creep-fatigue, and yield surface testing should be conducted when induction heating is utilized