3.3.4 Electrical Tabulated Classification and common usage of materials
GROUP
|
NAME
|
RESISTIVITY
|
COMMON USE
|
Conductors
|
Silver
|
1.63 x 10-8
|
Contacts
|
Copper
|
1.72 x 10-8
|
Cables
| |
Gold
|
2.20 x 10-8
|
Contacts and integrated circuits
| |
Aluminium
|
2.67 x lO-8
|
Power line cables
| |
Brass
|
8 x 10-8
|
Terminals
| |
Semi-conductors
|
Carbon
|
4 x 10-5
|
Machine brushes
|
Silicon
|
1 x 10-2
|
Most semi-conductor devices
| |
Germanium
|
46 x 10-2
|
Transistors diodes
| |
Gallium
|
1.7 X 10-1
|
Light emitting diodes
| |
Insulators
|
Porcelain
|
1 X 109
|
Line support insulators
|
PVC
|
1 x 107
|
Cable insulators
| |
Rubber
|
1 x 106
|
Cable insulators
| |
Mica
|
5 x 1014
|
Heating element insulator
| |
Polyester
|
1 x 1011
|
Capacitor dielectrics
| |
Glass
|
1 x 107
|
Power line insulators
|
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