3.5. Other parameters In addition to the parameters discussed in the earlier sections, there are some others which effectively change the fatigue characteristics of SLM steels and are not directly related to the manufacturing process. These parameters include service environment, characteristics of the cyclic loading condition, nature of the utilized beam, and its focal point diameter. However, it is not possible to attribute the results of one study on a specific type of steel to the other types of this material. Thus, understanding the general effects of these parameters on the fatigue characteristics of SLM steels necessitates further research.