The Class D fire use combustible metal as its fuel source. Examples of such combustible metals include titanium, magnesium, aluminum, and potassium. To extinguish a Class D fire, use a dry powder agent. This absorbs the heat that fire requires to burn and smothers it as well.

A - pożary ciał stałych, B - pożary cieczy, C - pożary gazów, D - pożary metali i F - pożary tłuszczów.