|
COPPER
FOIL
(Cu)
MATERIAL
OVERVIEW
Characteristics:
Distinctive reddish color; ductile; excellent
conductor of electricity. Complexing
agent, coordination numbers 2 and 4. Dissolves
readily in nitric and hot concentrated H2SO4,
in HCl and dilute H2SO4
slowly
but only when exposed to the atmosphere. More
resistant to atmospheric corrosion than iron,
forming a green layer of hydrated basic
carbonate. Readily attacked
by alkalies. A necessary trace element in human
diet; a factor in plant metabolism. Essentially
nontoxic in elemental form. Powder is
combustible.
Derivation:
With sulfide ores the steps may be (1)
concentration (of low grade ores) by flotation
and leaching, (2) roasting, (3) formation of
copper matte (40-50% Cu), (4) reduction of
matte to blister copper (96-98%), (5)
electrolytic refining to 99.9+% copper.
Hazard:
Toxic and flammable in finely divided form.
Tolerance (fume) 0.2 mg/m3;
(dusts and
mists)
1 mg/m3.
GENERAL
PROPERTIES
|
Symbol:
|
Cu
|
|
Atomic
Number:
|
29
|
|
Atomic
Weight:
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63.546
|
|
Density:
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8.96
gm/cc
|
|
Melting
Point:
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1083.4
oC
|
|
Boiling
Point:
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2567
oC
|
|
Thermal
Conductivity:
|
4.01
W/cm/oK
@ 298.2 oK
|
|
Electrical
Resistivity:
|
1.678
microhm-cm @ 20 oC
|
|
Electronegativity:
|
1.9
Paulings
|
|
Specific
Heat:
|
0.092
Cal/g/oK
@ 25 oC
|
|
Heat
of Vaporization:
|
72.8
K-cal/gm atom at 2567 oC
|
|
Heat
of Fusion:
|
3.11
Cal/gm mole
|
TYPICAL
ANALYSES
Impurities
in ppm
|
Material
/ Purity:
|
4N
|
5N
|
6N
|
|
Ag
|
1
|
0.3
|
0.2
|
|
As
|
10
|
1
|
-
|
|
Bi
|
2
|
0.2
|
-
|
|
Ca
|
-
|
0.1
|
0.3
|
|
Fe
|
2
|
0.1
|
0.1
|
|
Mg
|
1
|
0.2
|
0.1
|
|
Ni
|
30
|
-
|
-
|
|
Pb
|
3
|
0.1
|
-
|
|
Sb
|
20
|
1
|
-
|
|
Si
|
5
|
0.2
|
0.2
|
|
Sn
|
5
|
0.2
|
-
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COPPER
FOIL
|
Material
|
Purity
|
|
Copper
Foil .001
|
3N,
4N, 5N
|
|
Copper
Foil .002
|
3N,
4N, 5N
|
|
Copper
Foil .003
|
3N,
4N, 5N
|
|
Copper
Foil .004
|
3N,
4N, 5N
|
|
Copper
Foil .005
|
3N,
4N, 5N
|
|
Copper
Foil .006
|
3N,
4N, 5N
|
|
Copper
Foil .007
|
3N,
4N, 5N
|
|
Copper
Foil .008
|
3N,
4N, 5N
|
|
Copper
Foil .009
|
3N,
4N, 5N
|
Foil
is cut to order and sold by the square inch or
square foot.
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