Tungsten Metal & Powder from READE

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Reade Advanced Materials offers:

Tungsten Metal & Powder

Tungsten Synonyms:

Tungsten, wolfram, wolframite
Tungsten Designations:

Chemical Name: Tungsten, Wolfram, Heavy Stone

Chemical Formula: W

Tungsten Description:

The metallic element tungsten is not found free in nature, but in several ores. tungsten is steel-gray to tin-white in color and, when very pure, can be forged, spun, drawn, and extruded. Impure tungsten is very brittle and difficult to work. Tungsten is very resistant to corrosion and stable in dry air at room temperature. Tungsten's melting point exceeds that of all other metals and it has the lowest vapor pressure. At temperatures over 1650°C Tungsten has the highest tensile strength.

Tungsten Chemical Properties Available:

99.9%, 99.95%, and 99.999%,

Tungsten Physical Properties Available:

Crushed ingot, single crystal, pellets, pieces, many powder granulations (down to 0.5 to 0.6 microns and nano size), foil, plate, wire, and rod

Tungsten Physical Constants:

Atomic Number	74
Molecular Weight (g/mol.)	183.85
Apparent Density (g/cm³)	19.3
Crystal Structure	BCC
Specific Heat @25°C (cal/g-°C)	.032
Melting Point (°C)	~3410
Boiling Point (°C)	~5900
Thermal Conductivity (cal/s-cm°C)	.40
Hardness, Rc (alloyed)	25 - 31
Electrical Resistivity	0.055
Temp. Coeff. of Resistivity	0.00482
Elastic Modulus	410
Poisson Ratio	0.28
Recrystallization Temp. (deg.C)	~1300

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Tungsten Typical Applications:

Lamp filaments, heating elements, high-temperature vacuum furnaces, arc-lamp electrodes, glass to metal seals, drill bits, nozzle heads, semi-conductors, inertial weights, targets for x-ray tubes, vibration damping; as "heavy-metal alloy", counter-balances, radio isotope containers, armor penetrations.

Tungsten Availability Comment:

As of May 2005 there is a world shortage of tungsten metal. READE is a global distributor of tungsten metal. Recent Public News: a) There is a large tungsten mine in Can Tung, Canada that is being reopened. b) There is a new open-pit tungsten mine that is opening in Nui Phao, Vietnam, which is projected to become operational in CY 2008.
Tungsten Packaging Options:

Drums

Tungsten TSCA (SARA Title III) Status:

Yes. For further information please call the E.P.A. at (800) 535-0202

Tungsten Chemical Abstract Service Number:

7440-33-7

Tungsten UN Number:

3089 (powder)

Contact READE

East Coast USA: +1-401-433-7000 / West Coast USA: +1-775-352-1000 / Latin America: +507-314-1282