Creep in metals under constant load indicates that plastic deformation depends on the duration as well as the magnitude of the compressive force. The dependence of deformation on duration is significant in the lead crushers used in measuring pressures. Static compression tests on lead, extending over 30‐minute periods, and under various loads up to 109 kg have been conducted. The dependence of deformation on duration is found to be great under the higher loads, and much greater than the dependence in the case of copper and aluminum, on which comparative tests were made. The deformation‐compression‐time relation is found to be approximately linear under constant pressure. The present data are in agreement with the results of Bogomolov and Kunin on lead for pressures in a higher range. However, the law derived by them does not hold in the pressure‐range of the present tests.