Electromagnetic absorbers are a critical part of electronic systems in applications such as electromagnetic shielding for air vehicles and wireless communications. Alternatively, ferrites can be engineered to show enhanced dielectric losses in wide frequency range by appropriate choice of composition. M-type strontium hexaferrite SrFe 9 Mn 1.5 Ti 1.5 O 19 , SrFe 9 Mn 1.5 Co 1.5 O 19 and SrFe 9 Co 1.5 Ti 1.5 O 19 were synthesized by solid state method. The samples were synthesized from stoichiometric mixtures of Fe 2 O 3 , TiO 2 , Co 3 O 4 , SrCO 3 and MnCO 3 . Mixtures were crushed for 6h and sintered in air at 1250 ?C for 3h. The heating rate of samples was 6 ?C/min. Finally, the sintered ferrites were crushed again to obtain fine powders with a wide range distribution of particle sizes observed from SEM evaluation. The composite specimens were prepared by mixing the strontium ferrite in different weight ratios, 50, 60, 70 and 80% in polyvinylchloride. Mixture of ferrite powders with polyvinylchloride plasticized and fired at 220°C and 5.5MPa. Curing time was 14min. the pressed composites were in the form of cylindrical with thickness of 1.8 mm and the diameter of 40mm. In order to investigation of corrosion behavior of the prepared composites as a coating on radar targets in the sea water, the mixture were coated on Aluminum substrate with 1.7, 1.8 and 1.9 mm thickness via painting. The obtained powders were characterized by XRD, SEM, EDS and susceptometer. The reflection loss of the prepared composites was measured by Vector Network Analyzer. The corrosion behavior of the coating was evaluated by EIS technique. The results showed that the particle size of the two samples had a wide range of distribution and the magnetoplumbite structure was formed in the samples. The composites with 70% ferrite content had shown a maximum reflection loss. The wideband of the SrFe 9 Mn 1.5 Ti 1.5 O 19 ferrite was 3 GHz with higher 15 dB reflection loss. This result showed that it can be a good candidate for electromagnetic compatibility and other practical applications at high frequency. The corrosion resistance of coating was comparable with other sea coatings