3.4. Effects of manufacturing parameters Some alloys are less responsive to post-manufacturing treatments. Hence, choosing the optimum SLM parameters is the most appropriate approach to achieve the best mechanical properties regarding such alloys. As an example, SLM steel 316L is a single phase and ductile austenitic steel. In addition, it is more tolerant towards residual stresses and porosities and less sensitive to post-manufacturing treatments. Thus, it is easier to achieve the best possible mechanical properties of SLM steel 316L via modification of its manufacturing parameters [75,76].