As a result of the demand for increasing the operating life of aeronauticparts, it is sought in this work to optimize the mechanical characteristicsof a bearing submitted to marine environment.Phase transformations during high speed austenizing have beenstudied together with the influence of thermal stresses due to inductionheating. It is observed that there are two ways to obtain the bestmechanical properties among which the shortest cycle could beused to reduce heat treatment time of highly alloyed cold worksteels.