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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 | Gases - Thermal Properties of Gases
Properties of Gases at Atmospheric Pressure
| Gas |
Temperature
°C |
Conductivity
W/m-°C |
Density
kg/m3 |
Specific Heat
J/kg-°C |
Dynamic Viscosity
kg/m-s |
Kinematic Viscosity
m2 /s |
Thermal Diffusivity
m2 /s |
| Helium |
-129.0 |
0.0928 |
0.3379 |
5.2 x 103 |
12.55 x 10-6 |
37.11 x 10-6 |
52.75 x 10-6 |
| Helium |
-73.0 |
0.1177 |
0.2435 |
5.2 x 103 |
15.66 x 10-6 |
64.38 x 10-6 |
92.88 x 10-6 |
| Helium |
-18.0 |
0.1357 |
0.1906 |
5.2 x 103 |
18.17 x 10-6 |
95.5 x 10-6 |
136.75 x 10-6 |
| Helium |
93.0 |
0.1691 |
0.1328 |
5.2 x 103 |
23.05 x 10-6 |
173.6 x 10-6 |
244.9 x 10-6 |
| Helium |
204.0 |
0.197 |
0.10204 |
5.2 x 103 |
27.5 x 10-6 |
269.3 x 10-6 |
371.6 x 10-6 |
| Helium |
316.0 |
0.225 |
0.08282 |
5.2 x 103 |
31.13 x 10-6 |
375.8 x 10-6 |
521.5 x 10-6 |
| Helium |
427.0 |
0.251 |
0.07032 |
5.2 x 103 |
34.75 x 10-6 |
494.2 x 10-6 |
666.1 x 10-6 |
| Helium |
527.0 |
0.275 |
0.06023 |
5.2 x 103 |
38.17 x 10-6 |
634.1 x 10-6 |
877.4 x 10-6 |
| Hydrogen |
-123.0 |
0.0981 |
0.16371 |
12.602 x 103 |
5.595 x 10-6 |
34.18 x 10-6 |
47.5 x 10-6 |
| Hydrogen |
-73.0 |
0.1282 |
0.1227 |
13.54 x 103 |
6.813 x 10-6 |
55.53 x 10-6 |
77.2 x 10-6 |
| Hydrogen |
-23.0 |
0.1561 |
0.09819 |
14.059 x 103 |
7.919 x 10-6 |
80.64 x 10-6 |
113.0 x 10-6 |
| Hydrogen |
27.0 |
0.182 |
0.08185 |
14.314 x 103 |
8.963 x 10-6 |
109.5 x 10-6 |
155.4 x 10-6 |
| Hydrogen |
77.0 |
0.206 |
0.07016 |
14.436 x 103 |
9.954 x 10-6 |
141.9 x 10-6 |
203.1 x 10-6 |
| Hydrogen |
127.0 |
0.228 |
0.06135 |
14.491 x 103 |
10.864 x 10-6 |
177.1 x 10-6 |
256.8 x 10-6 |
| Hydrogen |
177.0 |
0.251 |
0.05462 |
14.499 x 103 |
11.779 x 10-6 |
215.6 x 10-6 |
316.4 x 10-6 |
| Hydrogen |
227.0 |
0.272 |
0.04918 |
14.507 x 103 |
12.636 x 10-6 |
257.0 x 10-6 |
381.7 x 10-6 |
| Hydrogen |
277.0 |
0.292 |
0.04469 |
14.532 x 103 |
13.475 x 10-6 |
301.6 x 10-6 |
451.6 x 10-6 |
| Hydrogen |
327.0 |
0.315 |
0.04085 |
14.537 x 103 |
14.285 x 10-6 |
349.7 x 10-6 |
530.6 x 10-6 |
| Hydrogen |
427.0 |
0.351 |
0.03492 |
14.574 x 103 |
15.89 x 10-6 |
455.1 x 10-6 |
690.3 x 10-6 |
| Hydrogen |
527.0 |
0.384 |
0.0306 |
14.675 x 103 |
17.4 x 10-6 |
569.0 x 10-6 |
856.3 x 10-6 |
| Hydrogen |
527.0 |
0.412 |
0.02723 |
14.821 x 103 |
18.78 x 10-6 |
690.0 x 10-6 |
0.0010217 |
| Oxygen |
-123.0 |
0.01367 |
2.619 |
917.8 |
11.49 x 10-6 |
4.387 x 10-6 |
5.688 x 10-6 |
| Oxygen |
-73.0 |
0.01824 |
1.9559 |
913.1 |
14.85 x 10-6 |
7.593 x 10-6 |
10.214 x 10-6 |
| Oxygen |
-23.0 |
0.02259 |
1.5618 |
915.7 |
17.87 x 10-6 |
11.45 x 10-6 |
15.794 x 10-6 |
| Oxygen |
27.0 |
0.02676 |
1.3007 |
920.3 |
20.63 x 10-6 |
15.86 x 10-6 |
22.353 x 10-6 |
| Oxygen |
77.0 |
0.0307 |
1.1133 |
929.1 |
23.16 x 10-6 |
20.8 x 10-6 |
29.68 x 10-6 |
| Oxygen |
127.0 |
0.03461 |
0.9755 |
942.0 |
25.54 x 10-6 |
26.18 x 10-6 |
37.68 x 10-6 |
| Oxygen |
177.0 |
0.03828 |
0.8682 |
956.7 |
27.77 x 10-6 |
31.99 x 10-6 |
46.09 x 10-6 |
| Oxygen |
227.0 |
0.04173 |
0.7801 |
972.2 |
29.91 x 10-6 |
38.34 x 10-6 |
55.02 x 10-6 |
| Oxygen |
277.0 |
0.04517 |
0.7096 |
988.1 |
31.97 x 10-6 |
45.05 x 10-6 |
64.1 x 10-6 |
| Nitrogen |
-73.0 |
0.01824 |
1.7108 |
1.0429 x 103 |
12.947 x 10-6 |
7.568 x 10-6 |
10.224 x 10-6 |
| Nitrogen |
27.0 |
0.0262 |
1.1421 |
1.0408 x 103 |
17.84 x 10-6 |
15.63 x 10-6 |
22.044 x 10-6 |
| Nitrogen |
127.0 |
0.03335 |
0.8538 |
1.0459 x 103 |
21.98 x 10-6 |
25.74 x 10-6 |
37.34 x 10-6 |
| Nitrogen |
227.0 |
0.03984 |
0.6824 |
1.0555 x 103 |
25.7 x 10-6 |
37.66 x 10-6 |
55.3 x 10-6 |
| Nitrogen |
327.0 |
0.0458 |
0.5624 |
1.0756 x 103 |
29.11 x 10-6 |
51.19 x 10-6 |
74.86 x 10-6 |
| Nitrogen |
427.0 |
0.05123 |
0.4934 |
1.0969 x 103 |
32.13 x 10-6 |
65.13 x 10-6 |
94.66 x 10-6 |
| Nitrogen |
527.0 |
0.05609 |
0.4277 |
1.1225 x 103 |
34.84 x 10-6 |
81.46 x 10-6 |
116.85 x 10-6 |
| Nitrogen |
627.0 |
0.0607 |
0.3796 |
1.1464 x 103 |
37.49 x 10-6 |
91.06 x 10-6 |
139.46 x 10-6 |
| Nitrogen |
727.0 |
0.06475 |
0.3412 |
1.1677 x 103 |
40.0 x 10-6 |
117.2 x 10-6 |
162.5 x 10-6 |
| Nitrogen |
827.0 |
0.0685 |
0.3108 |
1.1857 x 103 |
42.28 x 10-6 |
136.0 x 10-6 |
185.91 x 10-6 |
| Nitrogen |
927.0 |
0.07184 |
0.2851 |
1.2037 x 103 |
44.5 x 10-6 |
156.1 x 10-6 |
209.32 x 10-6 |
| Carbon dioxide |
-53.0 |
0.010805 |
2.4733 |
783.0 |
11.105 x 10-6 |
4.49 x 10-6 |
5.92 x 10-6 |
| Carbon dioxide |
-23.0 |
0.012884 |
2.1657 |
804.0 |
12.59 x 10-6 |
5.813 x 10-6 |
7.401 x 10-6 |
| Carbon dioxide |
27.0 |
0.016572 |
1.7973 |
871.0 |
14.958 x 10-6 |
8.321 x 10-6 |
10.588 x 10-6 |
| Carbon dioxide |
77.0 |
0.02047 |
1.5362 |
900.0 |
17.205 x 10-6 |
11.19 x 10-6 |
14.808 x 10-6 |
| Carbon dioxide |
127.0 |
0.02461 |
1.3424 |
942.0 |
19.32 x 10-6 |
14.39 x 10-6 |
19.463 x 10-6 |
| Carbon dioxide |
177.0 |
0.02897 |
1.1918 |
980.0 |
21.34 x 10-6 |
17.9 x 10-6 |
24.813 x 10-6 |
| Carbon dioxide |
227.0 |
0.03352 |
1.0732 |
1.013 x 103 |
23.26 x 10-6 |
21.67 x 10-6 |
30.84 x 10-6 |
| Carbon dioxide |
277.0 |
0.03821 |
0.9739 |
1.047 x 103 |
25.08 x 10-6 |
25.74 x 10-6 |
37.5 x 10-6 |
| Carbon dioxide |
327.0 |
0.04311 |
0.8938 |
1.076 x 103 |
26.83 x 10-6 |
30.02 x 10-6 |
44.83 x 10-6 |
| Ammonia, NH 3 |
0.0 |
0.022 |
0.7929 |
2.177 x 103 |
9.353 x 10-6 |
11.8 x 10-6 |
13.08 x 10-6 |
| Ammonia, NH 3 |
50.0 |
0.027 |
0.6487 |
2.177 x 103 |
11.035 x 10-6 |
17.0 x 10-6 |
19.2 x 10-6 |
| Ammonia, NH 3 |
100.0 |
0.0327 |
0.559 |
2.236 x 103 |
12.886 x 10-6 |
23.0 x 10-6 |
26.19 x 10-6 |
| Ammonia, NH 3 |
150.0 |
0.0391 |
0.4934 |
2.315 x 103 |
14.672 x 10-6 |
29.7 x 10-6 |
34.32 x 10-6 |
| Ammonia, NH 3 |
200.0 |
0.0467 |
0.4405 |
2.395 x 103 |
16.49 x 10-6 |
37.4 x 10-6 |
44.21 x 10-6 |
| Water vapor |
107.0 |
0.0246 |
0.5863 |
2.06 x 103 |
12.71 x 10-6 |
21.6 x 10-6 |
20.36 x 10-6 |
| Water vapor |
127.0 |
0.0261 |
0.5542 |
2.014 x 103 |
13.44 x 10-6 |
24.2 x 10-6 |
23.38 x 10-6 |
| Water vapor |
177.0 |
0.0299 |
0.4942 |
1.98 x 103 |
15.25 x 10-6 |
31.1 x 10-6 |
30.7 x 10-6 |
| Water vapor |
227.0 |
0.0339 |
0.4405 |
1.985 x 103 |
17.04 x 10-6 |
38.6 x 10-6 |
38.7 x 10-6 |
| Water vapor |
277.0 |
0.0379 |
0.4005 |
1.997 x 103 |
18.84 x 10-6 |
47.0 x 10-6 |
47.5 x 10-6 |
| Water vapor |
327.0 |
0.0422 |
0.3652 |
2.026 x 103 |
20.67 x 10-6 |
56.6 x 10-6 |
57.3 x 10-6 |
| Water vapor |
377.0 |
0.0464 |
0.338 |
2.056 x 103 |
22.47 x 10-6 |
66.4 x 10-6 |
66.6 x 10-6 |
| Water vapor |
427.0 |
0.0505 |
0.314 |
2.085 x 103 |
24.26 x 10-6 |
77.2 x 10-6 |
77.2 x 10-6 |
| Water vapor |
477.0 |
0.0549 |
0.2931 |
2.119 x 103 |
26.04 x 10-6 |
88.8 x 10-6 |
88.3 x 10-6 |
| Water vapor |
527.0 |
0.0592 |
0.2739 |
2.152 x 103 |
27.86 x 10-6 |
102.0 x 10-6 |
100.1 x 10-6 |
| Water vapor |
577.0 |
0.0637 |
0.2579 |
2.186 x 103 |
29.69 x 10-6 |
115.2 x 10-6 |
113.0 x 10-6 |
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Date/Time:
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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