Which class of fire classification includes combustible metals such as sodium and lithium?

The classification of fires is crucial for understanding how to effectively extinguish them, and each class represents different types of materials that can ignite and burn. Class D fires specifically involve combustible metals, which include substances like sodium and lithium. These metals react with water and can intensify the fire, making it essential to use specialized extinguishing agents that are designed for metal fires, rather than water or standard fire-suppression methods.

Class A fires involve ordinary combustibles, such as wood, paper, and cloth. Class B refers to flammable liquids and gases, while Class C includes electrically energized equipment. Since sodium and lithium are metals that require distinct handling and extinguishing methods, they fall squarely into Class D. Understanding this classification helps in applying the correct fire-fighting techniques and materials necessary to manage fires involving these hazardous metals effectively.