The most important features of the self-lubricating bearings are the antifriction properties
such as friction coefficient and wear resistence and some mechanical properties such as hardness,
tensile strength and radial crushing strength. In order to improve these properties new antifriction
materials based on iron-copper powders with several additional components (tin, lead and
molybdenum disulphide) have been developed by PM techniques. To find the optimal relationship
between chemical compositions, antifriction and mechanical properties, in this paper a
mathematical model of the sintering process is developed, which highlighted the accordance of the
model with data by regression analysis. For the statistical processing of the experimental data the
VH5 hardness values of the studied materials were considered. The development of mathematical
model includes the enunciation of the model, the establishment of the performance function
(optimization) and the establishment of the model equations and verifying. The accordance of the
model with experimental data has been highlighted by regression analysis
