Which fire extinguisher classification covers combustible metals such as magnesium, sodium, aluminum, and titanium?

Which fire extinguisher classification covers combustible metals such as magnesium, sodium, aluminum, and titanium?

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

Answer: (B)

Fires involving metals burn differently from ordinary fuels and require a specialized approach. Combustible metals such as magnesium, sodium, aluminum, and titanium can ignite and burn at very high temperatures and may react violently with water or many common extinguishing agents. The best method for these fires uses a dry powder formulated specifically for metal fires. This powder blankets the metal, isolates it from air and moisture, and absorbs heat, helping to smother the flame and slow the reaction. That makes it the appropriate choice for metal fires. Other extinguishers target ordinary combustibles, flammable liquids, or cooking oils, and they don’t provide the same protective action for metals, so they’re not suitable here.

Fires involving metals burn differently from ordinary fuels and require a specialized approach. Combustible metals such as magnesium, sodium, aluminum, and titanium can ignite and burn at very high temperatures and may react violently with water or many common extinguishing agents. The best method for these fires uses a dry powder formulated specifically for metal fires. This powder blankets the metal, isolates it from air and moisture, and absorbs heat, helping to smother the flame and slow the reaction. That makes it the appropriate choice for metal fires. Other extinguishers target ordinary combustibles, flammable liquids, or cooking oils, and they don’t provide the same protective action for metals, so they’re not suitable here.