The aim of this work was to determine the influence of silicon content on the magnetic properties of spray formed Fe-Si-Alloys. The deposits presented interesting soft magnetic properties and random crystallographic texture. After annealing at 1250degreesC for 1h under vacuum, the samples presented the best magnetic properties for all compositions investigated and the power loss (PT) decreased, while the maximum magnetic permeability(mumax) increased. The best magnetic properties were: a power loss of 1.43 W/kg, maximum magnetic permeability of 14000 and coercive force of 45 A/m, at B=1T, f=60 Hz by using 0.60mm thick rings, obtained with the Fe-6.5%Si alloy. The better magnetic properties after annealing were attributed to grain growth and defects elimination. The properties obtained for the Fe-5%Si and Fe-6,5%Si alloys were considerable better than those presented by commercial non-oriented Fe-3wt%Si steel sheets, and the deposits are isotropic, which make them attractive for applications in rotating devices and small power transformers.