3D printing, which is realized in layer-by-layer mode, i.e. additive metal fusion is known as one of the modern technical solutions in producing semi products and parts, especially of complex configuration. The purpose of the study is to investigate the effect of laser melting parameters on the properties of the resulting product. The characterization of powder for printing is provided. Samples for the study of the physical and mechanical properties of the material were produced on a layer-by-layer deposition MeltMaster3D-550 machine using the selective laser melting method manufactured by CNIITMASH. Cylindrical billets with a building direction orthogonal to the longitudinal axis were obtained by an additive method and tensile test specimens were made from them. It was revealed that with a lower laser scanning speed the higher values of strength were achieved. It was found that the HRB hardness is higher with higher laser power. The hardness was found to be inversely proportional to the energy density. The density function of the material depending on the energy density has a maximum, which corresponded to the high strength.