Which class of fire consists of Flammable Metal?

• A. Class A
• B. Class B
• C. Class C
• D. Class D

Answer: (D)

Flammable metals burn differently from ordinary fuels, so they have their own fire category. Metals like magnesium, sodium, potassium, and some aluminum forms can ignite in intense, fast-burning flames and may react with water or other extinguishing agents. To handle these safely, fires involving metals use dry powder extinguishing agents that are specially formulated for metal fires. These powders blanket the metal, interrupt the chemical reactions happening in the flame, and help prevent re-ignition by isolating the fuel from the air. Water, foam, and many other common extinguishing agents can be ineffective or dangerous with metal fires, so a specialized approach is required. This is why the scenario is identified as the metal-fire class.