Thermal Conductivity |
|
|
Thermal
Conductivity of Materials at 20o C |
|
| Material |
Conductivity |
Material |
Conductivity |
|
Cast
iron |
51.9 |
Bronze
(75 - 25) |
26.0 |
Aluminium |
204 |
Lead |
34.6 |
Duralumin |
164 |
Mercury |
8.7 |
Magnesium |
171 |
Nickel |
90 |
Copper |
386 |
Silver |
407 |
Brass
(70 - 30) |
111 |
Zinc |
112 |
Constantan |
22.7 |
Tin |
64 |
Tungsten |
163 |
Glasswool |
0.04 |
Glass |
0.762 |
Loose
cork |
0.036 |
Bakelite |
0.232 |
Loose
earth |
0.521 |
Concrete |
0.8
- 1.4 |
Silk |
0.036 |
Gypsum
plaster |
0.485 |
Engine
oil |
0.145 |
Common
brick |
1.32 |
Freon
- 12 |
0.073 |
Facing
brick |
0.32 |
Water |
0.597 |
Cotton |
0.059 |
Methyl
chloride |
0.163 |
|
|
|
Thermal Conductivity of Steel at 20o C (W/mk) |
|
| Steel |
Conductivity |
|
Carbon
steel |
35
- 55 |
Nickel
steel |
12
- 50 |
Chrome
steel |
30
- 60 |
Cr
- Ni steel |
16 |
Ni
- Cr steel |
14 |
Silicon
steel |
31 |
Manganese
steel |
38 |
Tungsten
steel |
62 |
|
|
|
Thermal Conductivity at given Temperature |
|
| Material |
Temperature |
Conductivity |
|
Fire
clay |
500o
C |
1.28 |
Fire
clay |
1100o
C |
1.4 |
Asbestos |
0o
C |
0.151 |
Asbestos |
100o
C |
0.192 |
Wool
felt |
30o
C |
0.0519 |
Magnesite |
204o
C |
3.81 |
Magnesite |
1204o
C |
1.9 |
Ice |
0o
C |
2.22 |
Diatomaceous
earth |
204o
C |
0.242 |
Diatomaceous
earth |
872o
C |
0.312 |
|
|
