Material Tungsten
Tungsten (W from wolframite) has the highest melting point of any metal (3410 C), and thus it is characterised by high strength at elevated temperatures.

Disadvantages are high density, brittleness and poor resistance to oxidation.

Tungsten and its alloys are used for applications involving temperatures above 1650 C (e.g. nozzle throat lines in missiles, hottest parts of jet and rocket engines). The filament wire in incandescent bulbs is made of pure tungsten by powder technology.
Danish Name Wolfram. Tungsten
Category Metals, Refractory metals
Products Electrical bulb filament wire
Dart arrow
Processes Powder technology
Keywords High temperature
Refractory
High density
Weight
Additional Info Chemical symbol W, atomic number is 73, melting point is 3410 C, density 19.3, very hard.
Photo Thomas Nissen (Computer graphics)
Copyright © 1996-2004 Torben Lenau
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