SAE AMS 2486E-2010 Fluoride-phosphoric acid salt-based off-machine coating of titanium alloys specifies methods and requirements for conversion coating of titanium alloy surfaces with fluoride-phosphoric acid solution. This standard is suitable for improving corrosion resistance, coating adhesion and lubrication performance of titanium alloy surfaces. It is widely used in aerospace, automotive and industrial applications where high-performance surface preparation is required. The standard details the surface pretreatment requirements before treatment, Spreader process parameters, mass inspection methods and environmental safety considerations. Through clear technical specifications, the standard provides manufacturers and users with a unified basis for quality control to ensure the conformity of coatings Stability and performance.