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COBALT
(Co)
MATERIAL
OVERVIEW
Characteristics:
Steel-gray, shining, hard, ductile, somewhat malleable
metal; ferromagnetic, with permeability two-thirds
that of iron. Cobalt
has exceptional magnetic properties in alloys.
It is attached by dilute hydrochloric and
sulfuric acids. It
is soluble in nitric acid.
Cobalt corrodes readily in air.
Hardness: cast, 124 Brinell; electrodeposited,
300 Brinell. An
important trace element in soils and necessary for
animal nutrition.
Cobalt has unusual coordinating properties,
especially the trivalent ion.
Noncombustible except in powder form.
Derivation:
From ore concentrates by roasting followed (a) by
thermal reduction by Cobalt, or (b) by electrolytic
reduction of solutions of metal; (c) by leaching, with
either ammonia or acid in an autoclave under elevated
temperatures and pressures and subsequent reduction by
H.
Hazard:
Dust is flammable and toxic by inhalation.
Tolerance, 0.05mg/m3 of air.
GENERAL
PROPERTIES
|
Symbol:
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Co
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|
Atomic
Number:
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17
|
|
Atomic
Weight:
|
58.9332
|
|
Density:
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8.9
gm/cc
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Melting
Point:
|
1495
oC
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|
Boiling
Point:
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2870
oC
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|
Thermal
Conductivity:
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1.0
W/cm/oK @ 298.2 oK
|
|
Electrical
Resistivity:
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6.24
microhm-cm @ 20 oC
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|
Electronegativity:
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1.8
Paulings
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|
Specific
Heat:
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0.109
Cal/g/oK @ 25 oC
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|
Heat
of Vaporization:
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93
K-cal/gm atom at 2870 oC
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|
Heat
of Fusion:
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3.64
Cal/gm mole
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TYPICAL
ANALYSES
Impurities
in ppm
|
Material
/ Purity:
|
3N
|
4N
|
5N
|
|
Ag
|
-
|
<1
|
<1
|
|
Ca
|
-
|
1
|
-
|
|
Cu
|
10
|
5
|
1
|
|
Fe
|
100
|
10
|
2
|
|
Mg
|
-
|
<1
|
<1
|
|
Na
|
-
|
1
|
-
|
|
Ni
|
-
|
30
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2
|
|
S
|
200
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-
|
-
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Si
|
-
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5
|
1
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COBALT
WIRE
|
Material
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Purity
|
|
Cobalt
Wire .005” to .090”
|
3N5
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Wire
diameters are available in increments of .001”.
Wire is spooled to order and sold by the foot or
meter.
COBALT
ROD
|
Material
|
Purity
|
|
Cobalt
Rod .0625”
|
3N5
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|
Cobalt
Rod .125”
|
3N5
|
|
Cobalt
Rod .250”
|
3N5
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|
Cobalt
Rod .500”
|
3N5
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|
Cobalt
Rod .625”
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3N5
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Cobalt
Rod .750”
|
3N5
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Cobalt
Rod 1”
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3N5
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Additional
diameters can be drawn in 2-3 days.
Rod is cut to order and sold by the inch or foot.
COBALT
FOIL
|
Material
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Purity
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Cobalt
Foil .001”
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3N5
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Cobalt
Foil .002”
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3N5
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|
Cobalt
Foil .003”
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3N5
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Cobalt
Foil .004”
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3N5
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Cobalt
Foil .005”
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3N5
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|
Cobalt
Foil .006”
|
3N5
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Cobalt
Foil .007”
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3N5
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Cobalt
Foil .008”
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3N5
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|
Cobalt
Foil .009”
|
3N5
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Foil
is cut to order and sold by the square inch or square
foot.
COBALT
SHEET
|
Material
|
Purity
|
|
Cobalt
Sheet .010” to 0.5”
|
3N5
|
Sheet
thicknesses are available in increments of .001”.
Sheet is cut to order and sold by the square inch or square foot.
COBALT
SPUTTERING TARGETS
|
Material
|
Purity
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|
Cobalt
Sputtering Target
2"D X .125"T
|
3N5
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Cobalt
Sputtering Target 2"D X .250"T
|
3N5
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Cobalt
Sputtering Target
3"D X .125"T
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3N5
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Cobalt
Sputtering Target 3"D X .250"T
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3N5
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Cobalt
Sputtering Target 4"D X .125"T
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3N5
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Cobalt
Sputtering Target 4"D X .250"T
|
3N5
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Additional
sizes and sputtering targets produced from compounds
are available
upon request.
COBALT
POWDER, SHOT, PELLETS, & INGOT
|
Material
|
Purity
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Cobalt
Shot .125"
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3N5
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Cobalt
Pellets .125"D
X .125"L
|
3N5
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Cobalt
Pellets .250"D X .250"L
|
3N5
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Cobalt
Ingot
|
3N5
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Cobalt
Powder-100 Mesh
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3N5,
4N
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Cobalt
Powder-325 Mesh
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3N5,
4N
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Powder,
shot, pellets, and ingots are packaged to order and
sold by the gram or kilogram.
COBALT
COMPOUNDS
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Material
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Purity
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Cobalt
Iodide, CoI2, -60 Mesh
|
2N5
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Cobalt
Iron Oxide, CoFe2O4, -100
Mesh
|
2N5
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Cobalt
Oxide, CoO, -325 Mesh
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2N5
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Cobalt
Oxide, Co3O4, -325 Mesh
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2N5
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Cobalt
Selenide, CoSe, 1/4" Pieces by Down
|
2N5
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Cobalt
Silicide, CoSi2, -325 Mesh
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2N
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Cobalt
Sulfide,
CoS
,
-200Mesh
|
2N5
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Cobalt
Sulfide, CoS2, -200 Mesh
|
2N5
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Cobalt
Titanate, CoTiO3, -325 Mesh
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3N
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Cobalt
Zirconate, CoZrO3, -325 Mesh
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2N5
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Compounds
are packaged to order and sold by the gram or
kilogram.
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