Erosion wear is usually an important problem in hydraulic turbines, especially when it works in an environment with high abrasive content, which can influence blades profile. The wear can affect the efficiency and work availability of hydroelectric turbines, mainly in environments with high density of sand. This paper aims to study the slurry jet erosion wear resistance of two HVOF coatings, Cr₃C₂ 25NiCr and WC 10Co4Cr in comparison to the turbine substrate, CA6NM steel. Jet slurry erosion test will be studied under three different impingement angles, 30, 60 and 90 degrees. In addition to the analysis of wear resistance, the article will also analyse coatings microstructure, such as porosity, thickness, hardness, toughness and carbide size. Different samples were prepared. The sample with the lowest erosion resistance, in all different tested angles, was the CA6NM steel. While both coatings presented higher erosion wear resistance, with a slight superiority to WC10Co4Cr coating. The ductile or brittle behaviour of materials in slurry jet erosion test under different impact angles was decisive in the intensity and type of wear mechanism. At 30° both coatings showed a decrease in the erosive wear rate, while CA6NM increased with the decrease of the impact angle.