Introduction to Pure Tungsten
Introduction to Pure Tungsten
Tungsten is a metal with a wide range of uses. Tungsten Alloy has the highest melting point, lowest vapor pressure and highest tensile strength at temperatures above 1650 degrees Celsius of all metals. It can only be attacked slightly by most mineral acids. It's coefficient of thermal expansion makes it a common choice for glass to metal sealing applications. Tungsten also has low emmisivity.
Physical Properties
Atomic weight 183.85
Density 19.3 g/cc
Melting Point 3695 k 3410¡ãC, 6191¡ãF
Boiling Point 5828K, 5900¡ãC, 10031¡ãF
Applications
Some Common Applications for Tungsten are:
elevision and light bulb filament
Electrodes
Furnace applications
Electronics
Nuclear applications
Aerospace applications
Glass to metal sealing
Electrical Contacts
Supports
Tungsten is extremely difficult to work with. It is difficult to turn and mill. Forming must be done at extremely high temperatures. Welding and riveting are not recommended. E.D.M. is the most practical way to machine Tungsten.
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