Which metal is NOT listed among the combustible metals in such fires?

Which metal is NOT listed among the combustible metals in such fires?

• A. Magnesium
• B. Titanium
• C. Zirconium
• D. Aluminum

Answer: (D)

Fires involving combustible metals focus on metals that can ignite and burn vigorously when in certain forms, such as dust or chips. Magnesium, titanium, and zirconium are well known to sustain combustion under those conditions, so they appear on typical lists of combustible metals for fire response. Aluminum, however, does not ignite as readily because its oxide layer provides a protective barrier that resists ignition, and it isn’t ordinarily included in that standard list. So aluminum is not listed among the combustible metals in such fires.

Fires involving combustible metals focus on metals that can ignite and burn vigorously when in certain forms, such as dust or chips. Magnesium, titanium, and zirconium are well known to sustain combustion under those conditions, so they appear on typical lists of combustible metals for fire response. Aluminum, however, does not ignite as readily because its oxide layer provides a protective barrier that resists ignition, and it isn’t ordinarily included in that standard list. So aluminum is not listed among the combustible metals in such fires.