AISI 630 (17-4 PH) is a martensitic stainless steel type produced by precipitation hardening heat treatment. It is a material that is difficult to process with traditional manufacturing methods due to its high strength and hardness. Electrical discharge machining (EDM) is often used as a very effective method for processing hard-to-cut materials. One of the most critical parameters in EDM is discharge current. Surface characterization of the samples processed at 7A, 12A, 22A current values was performed by linear surface roughness results, XRD, and SEM analysis. As a result of the study, it was seen that the current significantly affects the surface characterization of AISI 630 (17-4 PH) stainless steel with EDM.