THE TUNGSTEN
It is a rare metal in the earth's crust, it is in the
form of oxide and salts in certain minerals. It is gray, very hard and tense
and has the highest melting point of all metals and the highest boiling point
of all known chemical elements, which are: Melting: 3422 degrees celsius
Boiling: 5930 degrees Celsius
Tungsten is the heaviest element used by living things
Tungsten and its most popular alloy, tungsten carbide
are both excellent neutron reflectors, tungsten crystals are so compressed that
they turn out to be effective shields against radiation of any kind.
Approximately half of the tungsten is consumed for the
production of hard materials
In its pure state it is used in the manufacture of
filaments for electric lamps, resistors for electric ovens etc.
Tungsten, usually alloyed with nickel and iron or cobalt to
form heavy alloys, is used in kinetic energy penetrators.
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