This work aims at the study of the behavior of the powder systems Fe-Cu e Fe-Cu-Diamond under compaction, using the stoichiometries Fe-20Cu (wt%) e Fe-20Cu-4 Diamond (wt%). It was applied pressures at the interval 100 to 600 Mpa, and it was used the Balshin and Rong-De's equations to establish the exact behavior of the systems under pressing: accommodation, plastic deformation and particle's rearrangement.