Which type of fire extinguisher is specifically used for flammable metals?

Flammable metals require specific handling due to the unique nature of their combustion. A Class D fire extinguisher is specifically designed for fires involving combustible metals, such as magnesium, titanium, and sodium. These materials can react violently with water and some other extinguishing agents. Class D extinguishers typically employ dry powder agents that smother the fire without reacting adversely with the burning metal.

Class B extinguishers deal with flammable liquids and gases, which are not effective for metal fires. Likewise, Class C extinguishers are intended for electrical fires, while Class A extinguishers are meant for ordinary combustibles like wood and paper. As such, using the appropriate type of extinguisher is crucial for effectively and safely extinguishing fires involving flammable metals, making the Class D extinguisher the correct choice in this scenario.