What class of fire is designated for combustible metals?

The correct classification for fires involving combustible metals is Class D. This class specifically addresses fires that involve metals such as magnesium, titanium, sodium, potassium, and other similar substances that can ignite and burn at high temperatures. Fires of this nature require special suppression techniques because typical extinguishing agents, like water or foam, can exacerbate the fire or create hazardous reactions. Class D fire extinguishers are filled with dry powder agents capable of smothering the flames and preventing re-ignition.

Understanding the specific types of fires and their classifications is crucial for effective firefighting. For instance, Class A covers ordinary combustibles like wood, paper, and cloth. Class B is focused on flammable liquids such as gasoline and oils. Class C pertains to fires involving energized electrical equipment. These distinctions help firefighters choose the appropriate methods and materials for effectively controlling the fire and ensuring safety. In contrast, Class D's exclusive focus on combustible metals uniquely positions it to address the challenges presented by these specific materials.