The phase-field method is lately one of the most popular approaches for modelling of complex fracture phenomena. As known, the displacement field and phase-field variable cannot be determined simultaneously, except for easy problems, due to non-convexity of the energy functional. As a remedy, several staggered solution strategies have been proposed, where two PDE system is solved. Materials produced by powder metallurgy, such as sintered materials are increasingly in use. Compared to materials produced by traditional metallurgical production procedures, they possess exceptionally good vibration and noise reduction properties, and high rate of material utilisation. This makes this class of materials highly attractive for application in many fields of industry, especially for production of the complex geometry components. In this work, experimental investigation results performed on Astaloy Mo+0.2C, with density 6.5 g/cm3, will be used for validation of the phase field staggered algorithm. The proposed algorithm consists of two mesh layers (displacement- and phase field mesh layer), and it is implemented into FE software Abaqus via user subroutines UMAT and UEL.