How do you put out a combustible metal fire?

To extinguish a combustible metal fire, such as those involving magnesium or aluminum, use a Class D fire extinguisher specifically designed for metal fires. Never use water, as it can react violently with burning metals. If a Class D extinguisher is not available, smother the fire with dry sand or another suitable dry powder to starve it of oxygen. Always ensure proper personal protective equipment is worn and evacuate the area if the fire cannot be controlled quickly.