Thermal conductivity of solids
| Material |
λ [W m-1 K-1] |
tmax [°C] |
| building bricks |
0.60 |
- |
| refractory bricks |
1.20 |
1600 |
| fiber boards and mats |
| asbestos |
|
|
| NETAS SK/600 KP |
0.06 |
1000 |
| ceramic refractory |
|
|
| TERMOVIT |
0.12 |
1260 |
| mineral |
|
|
| ORSIL EL and ORSIL L |
0.044 |
200 |
| ORSIL M, N and T |
0.05 |
700 |
| glass |
|
|
| ITAVEL 12 |
0.035 |
250 |
| ITAVEL 24 |
0.041 |
250 |
| from blast furnace slag |
|
|
| V-150 až V-350 |
0.05 |
700 |
| granulated cork |
0.04 |
120 |
| pressed cork plates |
0.05 |
120 |
| boiler stone |
1.7 |
- |
| microporous inorganic insulating materials (e.g. SANTOCEL) |
0.03 |
1000 |
| expanded (loose) perlite |
0.1 |
750 |
| wool felt |
0.06 |
90 |
| polyurethane foam |
0.03 |
100 |
| polystyrene foam |
0.04 |
80 |
| foam glass |
0.06 |
430 |
| glass wool |
0.04 |
600 |
| slag wool |
0.07 |
750 |
| vermiculite 250 loose |
0.2 |
1000 |
tmax is the highest temperature the material can withstand
l is for temperature (20 + tmax)/2 °C
Thermal conductivity of selected metals and alloys as a function of temperature
| Temperature °C |
0 |
100 |
200 |
300 |
400 |
500 |
600 |
| Compound |
λ [W m-1 K-1] |
| aluminium |
203 |
206 |
215 |
230 |
249 |
268 |
- |
| brass (30 wt.% Zn, 70 wt.% Cu) |
97 |
104 |
109 |
114 |
116 |
- |
- |
| carbon structural steel |
- |
47 |
47 |
45 |
42 |
40 |
38 |
| copper pure |
388 |
377 |
372 |
367 |
363 |
358 |
353 |
| lead |
34 |
33 |
31 |
31 |
- |
- |
- |
| nickel |
62 |
59 |
57 |
55 |
- |
- |
- |
| tin |
62 |
59 |
57 |
- |
- |
- |
- |
| silver |
418 |
412 |
- |
- |
- |
- |
- |
| zinc |
112 |
110 |
107 |
102 |
93 |
- |
- |
