Electrical
Conductivity of Metals
|
Metal
|
Relative
Conductivity*
|
Temperature
Coefficient of
Resistance**
|
Tensile
Strength
(lbs./sq. in.)
|
Composition
of Earth's Crust
(% by Weight)
|
|
Aluminum
(2S; pure)
|
59
|
0.0039
|
30,000
|
8.1
|
|
Aluminum
(alloys):
Soft-annealed
Heat-treated
|
45-50
30-45
|
—
—
|
—
—
|
—
—
|
|
Brass
|
28
|
0.002-0.007
|
70,000
|
—
|
|
Cadmium
|
19
|
0.0038
|
—
|
.0001
|
|
Chromium
|
55
|
—
|
—
|
.02
|
|
Climax
|
1.83
|
0.0007
|
150,000
|
—
|
|
Cobalt
|
16.3
|
0.0033
|
—
|
.002
|
|
Constantin
|
3.24
|
0.00001
|
120,000
|
—
|
|
Copper:
Hard drawn
Annealed
|
89.5
100
|
0.00382
0.00393
|
60,000
30,000
|
—
.007
|
|
Everdur
|
6
|
—
|
—
|
—
|
|
Gold
|
65
|
0.0034
|
20,000
|
.0000005
|
|
Iron:
Pure
Cast
Wrought
|
17.7
2-12
11.4
|
0.005
—
—
|
—
—
—
|
5.0
—
—
|
|
Lead
|
7
|
0.0039
|
3,000
|
.002
|
|
Magnesium
|
—
|
0.004
|
33,000
|
2.1
|
|
Manganin
|
3.7
|
0.00001
|
150,000
|
—
|
|
Mercury
|
1.66
|
0.00089
|
0
|
.00005
|
|
Molybdenum
|
33.2
|
0.004
|
—
|
.001
|
|
Monel
|
4
|
0.002
|
160,000
|
—
|
|
Nichrome
|
1.45
|
0.0004
|
150,000
|
—
|
|
Nickel
|
12-16
|
0.006
|
120,000
|
.008
|
|
Nickel
silver (18%)
|
5.3
|
0.00014
|
150,000
|
—
|
|
Phosphor
bronze
|
36
|
0.0018
|
25,000
|
—
|
|
Platinum
|
15
|
0.003
|
55,000
|
.0000005
|
|
Silver
|
106
|
0.0038
|
42,000
|
.00001
|
|
Steel
|
3-15
|
0.004-0.005
|
42,000-230,000
|
—
|
|
Tin
|
13
|
0.0042
|
4,000
|
.004
|
|
Titanium
|
5
|
—
|
50,000
|
.4
|
|
Titanium,
6A14V
|
5
|
—
|
130,000
|
—
|
|
Tungsten
|
28.9
|
0.0045
|
500,000
|
.007
|
|
Zinc
|
28.2
|
0.0037
|
10,000
|
.01
|
|
|
