A type D fire is associated with which of the following materials?

Type D fires are specifically related to combustible metals, which include substances such as magnesium, titanium, and sodium. These types of materials burn at extreme temperatures and often require special types of extinguishing agents, such as dry powder agents, which are designed to handle the unique challenges posed by metal fires.

It is important to understand that combustible metals behave differently from hydrocarbons (flammable liquids) or organic materials (wood and paper) when ignited, hence they fall into their own distinct category of fire hazards. Such fires cannot be extinguished using traditional water-based methods, as doing so may exacerbate the situation. This understanding emphasizes the specific nature of Type D fires and the correct handling procedures required for materials that are classified under this category.