What fire extinguisher class is used specifically for combustible metals?

The class of fire extinguishers specifically designed for combustible metals is Class D. Combustible metals, such as magnesium, titanium, and sodium, require unique methods of fire suppression because they can burn at very high temperatures and react with water and other common extinguishing agents.

Class D extinguishers are equipped with dry powder agents that do not conduct electricity and are designed to smother the flames effectively without the risk of violent reactions that water or foam could provoke. This makes Class D extinguishers essential in environments where combustible metals are handled or processed, such as metal manufacturing facilities or laboratories.

In contrast, Class A extinguishers are intended for ordinary combustible materials like wood and paper, Class B extinguishers are for flammable liquids, and Class C extinguishers are designed for electrical fires. Each class serves a distinct purpose based on the nature of the burning material, which highlights the importance of using the correct type of extinguisher for specific fire hazards.