Class D fires are particularly dangerous due to which type of materials?

Class D fires are particularly dangerous because they involve ignitable metals such as magnesium, titanium, sodium, and potassium. These materials can ignite and burn at exceptionally high temperatures, leading to intense and difficult-to-extinguish fires. Unlike other classes of fires, Class D fires cannot be extinguished using water or standard fire extinguishing agents, as doing so can cause the burning metal to react violently, potentially worsening the situation.

The unique nature of these combustible metals makes Class D fires require specific extinguishing methods, typically using dry powder agents designed for this purpose. Proper training and understanding of Class D fire hazards are crucial for safety in environments where these materials are present, such as in metalworking industries or certain manufacturing processes. This distinguishing characteristic is what makes Class D fires particularly hazardous compared to fires fueled by ordinary combustibles, flammable liquids, or electrical equipment.