The manufacturing technology of additively manufactured components offers a new design flexibility, which could be used to improve products in the future. Therefore, methods for the fatigue design must be available in order to increase the benefits of this new production technology also for safety-relevant components. Several studies have already been carried out in order to understand, how this new technology influences the mechanical properties of materials under quasi-static loading. Despite this, the knowledge about the cyclic material behavior is still rare, but plays a major role in order to evaluate relevant influencing factors as, for example, the microstructural size effect. The material behavior, as well as the fatigue properties, are affected by different process variables, which lead to anisotropic microstructures, gradients of the local properties and imperfections. Therefore, cyclic stress-strain curves have been determined by incremental step tests, performed on specimens which differ in thickness, finishing and layer orientations.