In the context of fire classes, which of the following materials would be considered when identifying a Class D fire?

In the classification of fires, Class D fires are specifically associated with combustible metals. Materials that fall into this category include metals like sodium, magnesium, potassium, and titanium. These metals can ignite and burn very fiercely when they come into contact with water or air, producing flammable metal oxides and making them especially hazardous in fire situations.

Class D fires require particular extinguishing agents, such as dry powder agents designed to smother the flames and prevent the chemical reactions that sustain the fire. This distinct classification is crucial for ensuring that the correct firefighting methods and materials are used, as using water or standard fire extinguishers can exacerbate the situation and potentially cause an explosive reaction.