Which fire class involves combustible metals such as magnesium and sodium?

Class D fires specifically involve combustible metals, which include substances like magnesium, sodium, potassium, and other reactive metals. These materials pose unique challenges in firefighting because they do not extinguish fires using traditional methods like water; in fact, water can react violently with some of these metals. Instead, specialized extinguishing agents such as dry powder extinguishers are required to effectively combat Class D fires.

Class A fires involve ordinary combustibles like wood, paper, and textiles, which can be extinguished with water or foam. Class B fires pertain to flammable liquids and gases, while Class C fires involve energized electrical equipment. Understanding the classification of fires helps responders choose the appropriate methods and agents for effective firefighting, particularly with materials like combustible metals that require specific approaches to manage safely.