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liquid helium is inert, colorless, odorless, noncorrosive, extremely cold, and nonflammable. helium will not react with other elements or compounds under ordinary conditions. since helium is noncorrosive, special materials of construction are not required. however, materials must be suitable for use
gas- eous helium is for inert shielding gas in metal arc and laser welding. helium provides a protective atmosphere in the production of reactive metals, such as titanium and zirconium. gaseous helium is used as a coolant during the draw- ing of optical fibers, as a carrier gas for chromatography, and...
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