What is a key characteristic of Class D fires?

A key characteristic of Class D fires is that they involve combustible metals, such as magnesium, titanium, and sodium. These types of fires require specific extinguishing agents that are designed to deal with the unique properties of the burning metals, as water or standard fire extinguishers can actually intensify these fires. Understanding this distinction is crucial for proper fire safety and management, particularly in environments where these metals are present.

While fires related to appliances, those that produce smoke, or those resulting from chemical reactions may describe various other fire scenarios, they do not specifically define Class D fires, which are distinct due to the properties of combustible metals.