Thermal physical substantiation of choice of the optimal cooling conditions during solidification under the conditions of industrial production has been presented. Researches of macro- and microstructure have been executed, mechanical properties of foundry samples of gold-palladium alloy (PdN-5) have been defined. On the base of comparative analysis of structural and mechanical properties, the optimal cooling conditions have been established: holding in а mould for 10 min with further cooling in water. As the result of these cooling conditions during solidification of ignot of PdN-5 alloy, non-dendritic structure excluding homogenizing annealing has been formed and, therefore, technological cycle of manufacture of finished products has been shortned.