In today's industry sintered steel products are slowly becoming part of everyday life. Due to their good properties such as lower mass, good damping, less need for subsequent surface treatment, the possibility of alloying with various elements and various other advantages, they have become standard in the automotive and aerospace industries. Sintered steel products are made using the powder metallurgy method, which compacts the metal powder into molds and forms products that, after sintering, have properties equal to or better than those they would have if they were made by one of the classical production methods. The main advantages of powder metallurgy are the possibility of manufacturing products with extremely high dimensional precision that do not need to be post-processed, and lower production costs. It is also important to emphasize that the impact on the environment with powder metallurgy is much smaller than with classical production methods, primarily because there is less waste and scrap. Due to the specific method of production of sintered steels, their constitutive behavior is non-linear. As in engineering practice, the degradation of material properties and material failure is one of the biggest problems that cause product damage, it is necessary to try to predict or prevent their occurrence. Therefore, in this work, the phase-field method was applied to solve the problem of fracture mechanics, by means of which the damage was modeled. The parameters of the phasefield method for modeling the constitutive behavior of sintered Astaloy Mo+0.2C with a density of 6.5 g/cm3 were determined using numerical simulations in the commercial Abaqus software package. Numerical simulations were compared with the results of static experimental tests conducted at the Chair of Mechanics and Strength of Materials at the Faculty of Mechanical Engineering and Naval Architecture in Zagreb. The obtained phase-field parameters 𝐺c and 𝑙 adequately model the fracture behavior of sintered steel for the case of static loading. In further work, the mentioned parameters should be verified by numerical simulations with cyclic loading in order to verify the fatigue fracture of the material.