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Thermal Conductivity of Gases Chart

This chart gives the thermal conductivity of gases as a function of temperature.

Unless otherwise noted, the values refer to a pressure of 100 kPa (1 bar) or to the saturation vapor pressure if that is less than 100 kPa.

The notation P = 0 indicates the low pressure limiting value is given. In general, the P = 0 and P = 100 kPa values differ by less than 1%.

Units: mW/m K ( milliwatts per meter kelvin).

MF
Name
100 K
200 K
300 K
400 K
500 K
600 K
-
Air
9.4
18.4
26.2
33.3
39.7
45.7
Ar
Argon
6.2
12.4
17.9
22.6
26.8
30.6
BF3
Boron trifluoride
-
-
19.0
24.6
-
-
H2
Hydrogen (P = 0)
68.6
131.7
186.9
230.4
-
-
F6S
Sulfur hexafluoride (P = 0)
-
-
13.0
20.6
27.5
33.8
H2O
Water
-
-
18.7
27.1
35.7
47.1
H2S
Hydrogen sulfide
-
-
14.6
20.5
26.4
32.4
NH3
Ammonia
-
-
24.4
37.4
51.6
66.8
He
Helium (P = 0)
75.5
119.3
156.7
190.6
222.3
252.4 8
Kr
Krypton (P = 0)
3.3
6.4
9.5
12.3
14.8
17.1
NO
Nitric oxide
-
17.8
25.9
33.1
39.6
46.2
N2
Nitrogen
9.8
18.7
26.0
32.3
38.3
44.0
N2O
Nitrous oxide
-
9.8
17.4
26.0
34.1
41.8
Ne
Neon (P = 0)
22.3
37.6
49.8
60.3
69.9
78.7
O2
Oxygen
9.3
18.4
26.3
33.7
41.0
48.1
O2S
Sulfur dioxide
-
-
9.6
14.3
20.0
25.6
Xe
Xenon (P = 0)
2.0
3.6
5.5
7.3
8.9
10.4
CCl2F2
Dichlorodifluoromethane
-
-
9.9
15.0
20.1
25.2
CF4
Tetrafluoromethane (P = 0)
-
-
16.0
24.1
32.2
39.9
CO
Carbon monoxide (P = 0)
-
-
25.0
32.3
39.2
45.7
CO2
Carbon dioxide
-
9.6
16.8
25.1
33.5
41.6
CHCl3
Trichloromethane
-
-
7.5
11.1
15.1
-
CH4
Methane
-
22.5
34.1
49.1
66.5
84.1
CH4O
Methanol
-
-
-
26.2
38.6
53.0
C2H2
Acetylene
-
-
21.4
33.3
45.4
56.8
C2H4
Ethylene
-
11.1
20.5
34.6
49.9
68.6
C2H6
Ethane
-
11.0
21.3
35.4
52.2
70.5
C2H6O
Ethanol
-
-
14.4
25.8
38.4
53.2
C3H6O
Acetone
-
-
11.5
20.2
30.6
42.7
C3H8
Propane
-
-
18.0
30.6
45.5
61.9
C4H10
Butane
-
-
16.4
28.4
43.0
59.1
C5H12
Pentane
-
-
14.4
24.9
37.8
52.7
C6H14
Hexane
-
-
-
23.4
35.4
48.7

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References:

  • Kadoya, K. Matsunaga, N., and Nagashima, A., Viscosity and thermal conductivity of dry air in the gaseous phase, J. Phys. Chem. Ref. Data, 14, 947, 1985.
  • Younglove, B. A. and Hanley, H. J. M., The viscosity and thermal conductivity coefficients of gaseous and liquid argon, J. Phys. Chem. Ref. Data, 15, 1323, 1986.
  • Holland, P. M., Eaton, B. E., and Hanley, H. J. M., A correlation of the viscosity and thermal conductivity data of gaseous and liquid ethylene, J. Phys. Chem. Ref. Data, 12, 917, 1983.

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