Thermal conductivity of aluminum at different temperatures
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Thermal conductivity of aluminum at different temperatures
Junjie Chen
Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China
Contributor: Junjie Chen, ORCID: 0000-0002-5022-6863, E-mail address: koncjj@gmail.com
The thermal conductivities of common substances span at least four orders of magnitude. Gases generally have low thermal conductivity, and pure metals have high thermal conductivity. For example, under standard conditions the thermal conductivity of copper is over ten thousand times that of air. Of all materials, allotropes of carbon, such as graphite and diamond, are usually credited with having the highest thermal conductivities at room temperature. The thermal conductivity of natural diamond at room temperature is several times higher than that of a highly conductive metal such as copper. The effect of temperature on thermal conductivity is different for metals and nonmetals. In metals, heat conductivity is primarily due to free electrons.
Thermal conductivity (watts per meter-kelvin), Temperature (degrees kelvin)
4510
6
5150
7
5730
8
6220
9
6610
10
6900
11
7080
12
7150
13
7130
14
7020
15
6840
16
6350
18
5650
20
4000
25
2850
30
2100
35
1600
40
1250
45
1000
50
670
60
500
70
400
80
340
90
300
100
247
150
237
200
235
250
236
273
237
300
240
350
240
400
237
500
232
600
226
700
220
800
213
900
创建时间：
2024-07-15
