This specification prescribes requirements for the classification of ferrous and nonferrous solid and composite wires and ceramic rods as manufactured@ for thermal spraying. Safety and health issues and concerns are beyond the scope of this standard and@ therefore@ are not fully addressed herein. Some safety and health information is available from other sources@ including@ but not limited to@ ANSI Z49.1@ Safety in Welding@ Cutting@ and Allied Processes@ and applicable federal and state regulations. This specification makes use of both U.S. Customary Units and the International System of Units (SI). The measurements are not exact equivalents; therefore@ each system must be used independently of the other without combining in any way when referring to thermal-spray feedstock and the deposited coating. The specification with the designation C2.25 uses U.S. Customary Units. The specification C2.25 M uses SI Units. The latter are shown within brackets [ ] or in appropriate columns in tables and figures.