Which class of fire involves combustible metals like magnesium and aluminum?

The classification of fire types is essential for understanding how to combat different fire hazards effectively. Fires involving combustible metals, such as magnesium and aluminum, are categorized under Class D fires. This classification is significant because traditional extinguishing agents, like water, can react with these metals and potentially exacerbate the fire. Class D fires require specialized extinguishing agents specifically designed to handle metal fires, such as dry powder extinguishers that can smother the reaction.

Understanding the nature of Class D fires is crucial for safe firefighting practices and ensuring the protection of personnel and equipment in environments where these metals are present. Other fire classes focus on different materials; for example, Class A addresses ordinary combustibles like paper and wood, Class B covers flammable liquids, and Class C pertains to electrical fires, but none apply to the unique challenges posed by combustible metals.