(1) The production of steel wool involves the use of oil which coats the wires.
(2) Oxidation of the metal on heating.
Steel wool can be ignited by:
(1) flame
(2) electricity, including a battery
(3) spark
Carrying steel wool with a battery can result in a fire if the steel wool connects the poles of the battery. A 9 volt battery is at increased risk since the poles are close together.
Steel wool can burn when wet. This makes it valuable for starting a fire in an emergency.
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