|
TUNGSTEN
(W)
MATERIAL
OVERVIEW
Characteristics:
Hard, brittle, gray solid. Not found native. High
electrical conductivity. Soluble in a mixture of
nitric acid and hydrofluoric acid. Low toxicity.
Corroded by seawater. Oxidizes in air at 400 °C, the
rate increasing rapidly with temperature.
Hazards:
Finely divided form is highly flammable and may ignite
spontaneously. Tolerance (as W) (insoluble compounds):
5 mg/m3 of air;
soluble compounds, 1 mg/m3 of air.
GENERAL
PROPERTIES
|
Symbol:
|
W
|
|
Atomic
Number:
|
74
|
|
Atomic
Weight:
|
183.85
|
|
Density:
|
19.3
gm/cc
|
|
Melting
Point:
|
3410
oC
|
|
Boiling
Point:
|
5900
oC
|
|
Thermal
Conductivity:
|
1.73
W/cm/oK
@ 298.2 oK
|
|
Electrical
Resistivity:
|
5.65
microhm-cm @ 27 oC
|
|
Electronegativity:
|
1.7
Paulings
|
|
Specific
Heat:
|
0.0317
Cal/g/oK
@ 25 oC
|
|
Heat
of Vaporization:
|
185
K-Cal/gm atom at 5660 oC
|
|
Heat
of Fusion:
|
8.42
Cal/gm mole
|
TYPICAL
ANALYSES
Impurities
in ppm
|
Material
/ Purity:
|
3N7
|
3N8
|
4N
|
|
K
|
<40
|
<20
|
<10.0
|
|
Cr
|
<40
|
10
|
<10.0
|
|
Ni
|
130
|
130
|
30.0
|
|
Cu
|
<40
|
<20
|
<10.0
|
|
Fe
|
40
|
20
|
10.0
|
TUNGSTEN
WIRE
|
Material
|
Purity
|
|
Tungsten
Wire .001” to .090”
|
3N8
|
Wire
is spooled to order and sold by the foot or meter.
TUNGSTEN
ROD
|
Material
|
Purity
|
|
Tungsten
Rod .003” X 12” to .060 X 12”
|
3N8
|
| |
|
|
Small
diameter rod is sold in one foot lengths.
TUNGSTEN
FOIL
|
Material
|
Purity
|
|
Tungsten
Foil .001”
|
3N8
|
|
Tungsten
Foil .002”
|
3N8
|
|
Tungsten
Foil .003”
|
3N8
|
|
Tungsten
Foil .004”
|
3N8
|
|
Tungsten
Foil .005”
|
3N8
|
|
Tungsten
Foil .006”
|
3N8
|
|
Tungsten
Foil .007”
|
3N8
|
|
Tungsten
Foil .008”
|
3N8
|
|
Tungsten
Foil .009”
|
3N8
|
Foil
is cut to order and sold by the square inch or square
foot.
TUNGSTEN
SHEET
|
Material
|
Purity
|
|
Tungsten
Sheet .010” to 1”
|
3N8
|
Sheet
is cut to order and sold by the square inch or square
foot.
TUNGSTEN
SPUTTERING TARGETS
|
Material
|
Purity
|
|
Tungsten
Sputtering Target 2"D X .125"T
|
3N7
|
|
Tungsten
Sputtering Target 2"D X .250"T
|
3N7
|
|
Tungsten
Sputtering Target 3"D X .125"T
|
3N7
|
|
Tungsten
Sputtering Target 3"D X .250"T
|
3N7
|
|
Tungsten
Sputtering Target 4"D X .125"T
|
3N7
|
|
Tungsten
Sputtering Target 4"D X .250"T
|
3N7
|
Additional
sizes available upon request.
TUNGSTEN
POWDER, SHOT, PELLETS, & INGOT
|
Material
|
Purity
|
|
Tungsten
Pellets .250"D
X .125"L
|
3N7
|
|
Tungsten
Pellets .250"D X .250"L
|
3N7
|
|
Tungsten
Ingot
|
3N7
|
|
Tungsten
Powder-100 Mesh
|
3N7
|
|
Tungsten
Powder-325 Mesh
|
3N7
|
Powder,
shot, pellets, and ingots are packaged to order and
sold by the gram or kilogram.
TUNGSTEN
COMPOUNDS
|
Material
|
Purity
|
|
Tungsten
Carbide WC -325
Mesh +10
Mesh
|
2N5
|
|
Tungsten
Carbide WC Less
Than 1 Micron
|
2N5
|
|
Tungsten
Carbide W2C
-325 Mesh
|
2N5
|
|
Tungsten
Oxide WO2
-100 Mesh
|
3N
|
|
Tungsten
Oxide WO3
1/2" to 1/8" Pieces
|
3N
|
|
Tungsten
Oxide WO3
-325 Mesh
|
3N
|
|
Tungsten
Selenide WSe2
5 Microns or Less
|
2N8
|
|
Tungsten
Silicide WSi2
-325 Mesh
|
2N5
|
|
Tungsten
Silicide W5Si3
-100 Mesh
|
2N5
|
|
Tungsten
Sulfide WS2
1 Micron or Less
|
2N8
|
Compounds
are packaged to order and sold by the gram or
kilogram.
|
