  We have studied U_3Si_2 by means of the heat capacity, electrical
resistivity, Seebeck and Hall effects, and thermal conductivity in the
temperature range 2-300 K and in magnetic fields up to 9 T. All the results
obtained point to delocalized nature of 5f-electrons in this material. The low
temperature heat capacity is enhanced (gamma_el ~ 150 mJ/mol-K2) and shows an
upturn in Cp/T (T), characteristic of spin fluctuations. The thermal
conductivity of U3Si2 is ~8.5 W/m-K at room temperature and we show that the
electronic part dominates heat transport above 300 K as expected for a metallic
system, although the lattice contribution cannot be completely neglected.
