An HR-2 hydrogen embrittlement resistant stainless steel was subjected to selective laser melting process testing performed at different levels of volume energy density. The microstructure and properties of the formed parts were characterized. The results revealed that, for a certain range of volume energy density values, the density, microhardness, tensile strength, and elongation of the parts increased with increasing volume energy density. At the maximum energy density of 113.3 J/mm³, the maximum density of the formed part, corresponding tensile strength, yield strength, elongation after fracture, and reduction in area were 99.9%, 765.5 MPa, 634 MPa, 44.0%, and 61%, respectively. These values satisfy the performance requirements of HR-2 forging specified in the GJB 5724 standard. The printed structure of HR-2 is composed of columnar crystals, with equiaxed grains inthe XY plane and columnar grains in the YZ plane. In the XY plane, the grain size increases first and then decreases with the increase of bulk energy density. This is the combined effect of poor fusion pores caused by insufficient heat input, the increase of undercooling caused by the decrease of scanning speed, and the increase of the proportion of remelting zone caused by the decrease of scanning spacing on grain size.