Deposits of the Fe-6.5wt%Si alloy produced by spray forming were annealed at temperatures between 900 and 1300 degrees C, during 1h in vacuum and quenched in oil at temperatures between 300 and 700 degrees C, separately. Magnetic properties, singular microstructure and random crystallographic texture were measured. After annealing at 1250 degrees C for 1h under vacuum, the average grain size is of 500 mu m, the grain orientation is random and the magnetic properties were: power loss of 1.30 W/kg, maximum permeability of 15400 and coercive force of 40 A/m, at B=1 T, f=60 Hz by using 0.60 mm thick rings for all studied samples. Higher annealing temperatures cause no decreasing of these properties. After quenched at 700 degrees C, an improvement the magnetic properties where detected due to antiphase domain B-2 growth. The magnetic properties were: power loss of 1.59 W/kg, maximum permeability of 12300 and coercive force of 76 A/m, at B=1 T, f=60 Hz.