Aluminum metallic powder is a light, silvery-white to gray, odorless powder. Aluminum metallic powder is reactive and flammable. Aluminum is normally coated with a layer of aluminum oxide unless the particles are freshly formed. There are two main types of aluminum powder: the ?fl ake? type made by stamping the cold metal and the ?granulated? type made from molten aluminum. Pyro powder is an especially fine type of ?flake? powder.
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