HVOF feeds large volumes of combustible gases into a high-pressure combustion chamber, then through a long nozzle, producing a supersonic gas jet at 1525 to 1825 m/s (5000 to 6000 ft/s). Combustion temperatures range 2500 to 3100 °C (4500 to 5600 °F). Fuels include hydrogen, propylene, propane, acetylene, kerosene. This process yields dense, wellbonded coatings, favored for many applications. The extremely high gas velocity increases particle velocity, enhancing coating density and adhesion.