Which type of fire extinguisher is used for flammable metals?

Flammable metals, such as magnesium, titanium, and sodium, require specialized fire extinguishing agents that are specifically designed to combat the unique properties of metal fires. Class D fire extinguishers are formulated to extinguish fires involving combustible metals by using dry powder agents that smother and chemically react with the burning metal, preventing the release of flammable gases and heat.

Class A extinguishers are effective for ordinary combustibles like wood, paper, and cloth. Class B extinguishers target flammable liquids, such as gasoline and oils. Class C extinguishers are suitable for electrical fires. However, none of these classes are intended for use on fires involving flammable metals, making Class D the essential choice for that particular hazard.