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A Class D fire extinguisher is specifically designed to combat fires involving combustible metals such as magnesium, sodium, titanium, and potassium. It contains a specialized extinguishing agent that can safely suppress and control fires fueled by these highly reactive metals.
Class D Fire Extinguishers are used for fighting class D fires including combustible metals or combustible metal alloys. Class D: Metal fires involving magnesium, sodium, potassium and sodium-potassium alloys.
A Class D fire extinguisher is specifically designed for metal-related fires. They are filled with a special dry powder that can handle almost any fire created with metal. Typically you will see one of two dry powders inside the canister, which includes sodium bicarbonate or sodium chloride.
The AMEREX model B570 flammable metal fire extinguisher has been FM approved for class D fires. Ideal for heavy industrial settings, the AMEREX B570 is recommended for metal fires involving magnesium, potassium, aluminum sodium-potassium alloys, and thermite.
To date, the only type of Class D fire extinguisher is the Dry Powder extinguisher. The powder agent used may be either powdered graphite, granular sodium chloride or copper based, all of which are effective at separating the fuel (the ignited combustible metal) from the oxygen.
AFFF (aqueous film-forming foam) and FFFP (film-forming fluoroprotein) fire extinguishers are rated for use on both Class A and Class B fires. As the name implies, they discharge a foam material rather than a liquid or powder. They are not suitable for use in freezing temperatures.
Which fire extinguisher types to use. Class A fire extinguisher – water, water mist, foam, dry powder, wet chemical; Class B fire extinguisher – water mist, foam, dry powder, CO2, some wet chemical; Class C fire extinguisher – water mist, dry powder; Class D fire extinguisher – specialist dry powder; Electrical fire extinguisher – CO2
Class D fires represent a unique fire hazard due to the properties of combustible metals involved, requiring a Class D fire extinguisher, or a dry powder extinguisher, for metal fires. Understanding their characteristics, common causes, and appropriate extinguishing methods is crucial for mitigating metal dust fires, and ensuring workplace safety.
One type of fire that requires special attention is the Class D fire, which involves burning metals such as lithium, magnesium, steel, and aluminum. Unlike other types of fires, Class D fires require specific types of extinguishing agents to put them out, as water can actually make them worse.
Combatting a Class D fire requires a specialist fire extinguisher designed to tackle the difficult and dangerous class of fire. The most commonly used extinguisher and the one that we offer is the L2 Dry Powder fire extinguisher.