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Engineering ToolBox > Dry Air Properties
Some common properties like
of dry air at temperatures ranging 175 K to 1900 K can be found in the table below.
| Temperature (K) | Specific Heat Capacity | Ratio of Specific Heats - k - (cp/cv) | Dynamic Viscosity - μ - 10-5 (kg/m s) | Thermal Conductivity 10-5 (kW/m K) | Prandtl Number | Kinematic Viscosity1) - ν - 10-5 (m2/s) | Density1) - ρ - (kg/m3) | |
| - cp - (kJ/kgK) | - cv - (kJ/kgK) | |||||||
| 175 | 1.0023 | 0.7152 | 1.401 | 1.182 | 1.593 | 0.744 | 0.586 | 2.017 |
| 200 | 1.0025 | 0.7154 | 1.401 | 1.329 | 1.809 | 0.736 | 0.753 | 1.765 |
| 225 | 1.0027 | 0.7156 | 1.401 | 1.467 | 2.020 | 0.728 | 0.935 | 1.569 |
| 250 | 1.0031 | 0.7160 | 1.401 | 1.599 | 2.227 | 0.720 | 1.132 | 1.412 |
| 275 | 1.0038 | 0.7167 | 1.401 | 1.725 | 2.428 | 0.713 | 1.343 | 1.284 |
| 300 | 1.0049 | 0.7178 | 1.400 | 1.846 | 2.624 | 0.707 | 1.568 | 1.177 |
| 325 | 1.0063 | 0.7192 | 1.400 | 1.962 | 2.816 | 0.701 | 1.807 | 1.086 |
| 350 | 1.0082 | 0.7211 | 1.398 | 2.075 | 3.003 | 0.697 | 2.056 | 1.009 |
| 375 | 1.0106 | 0.7235 | 1.397 | 2.181 | 3.186 | 0.692 | 2.317 | 0.9413 |
| 400 | 1.0135 | 0.7264 | 1.395 | 2.286 | 3.365 | 0.688 | 2.591 | 0.8824 |
| 450 | 1.0206 | 0.7335 | 1.391 | 2.485 | 3.710 | 0.684 | 3.168 | 0.7844 |
| 500 | 1.0295 | 0.7424 | 1.387 | 2.670 | 4.041 | 0.680 | 3.782 | 0.7060 |
| 550 | 1.0398 | 0.7527 | 1.381 | 2.849 | 4.357 | 0.680 | 4.439 | 0.6418 |
| 600 | 1.0511 | 0.7640 | 1.376 | 3.017 | 4.661 | 0.680 | 5.128 | 0.5883 |
| 650 | 1.0629 | 0.7758 | 1.370 | 3.178 | 4.954 | 0.682 | 5.853 | 0.5430 |
| 700 | 1.0750 | 0.7879 | 1.364 | 3.332 | 5.236 | 0.684 | 6.607 | 0.5043 |
| 750 | 1.0870 | 0.7999 | 1.359 | 3.482 | 5.509 | 0.687 | 7.399 | 0.4706 |
| 800 | 1.0987 | 0.8116 | 1.354 | 3.624 | 5.774 | 0.690 | 8.214 | 0.4412 |
| 850 | 1.1101 | 0.8230 | 1.349 | 3.763 | 6.030 | 0.693 | 9.061 | 0.4153 |
| 900 | 1.1209 | 0.8338 | 1.344 | 3.897 | 6.276 | 0.696 | 9.936 | 0.3922 |
| 950 | 1.1313 | 0.8442 | 1.340 | 4.026 | 6.520 | 0.699 | 10.83 | 0.3716 |
| 1000 | 1.1411 | 0.8540 | 1.336 | 4.153 | 6.754 | 0.702 | 11.76 | 0.3530 |
| 1050 | 1.1502 | 0.8631 | 1.333 | 4.276 | 6.985 | 0.704 | 12.72 | 0.3362 |
| 1100 | 1.1589 | 0.8718 | 1.329 | 4.396 | 7.209 | 0.707 | 13.70 | 0.3209 |
| 1150 | 1.1670 | 0.8799 | 1.326 | 4.511 | 7.427 | 0.709 | 14.70 | 0.3069 |
| 1200 | 1.1746 | 0.8875 | 1.323 | 4.626 | 7.640 | 0.711 | 15.73 | 0.2941 |
| 1250 | 1.1817 | 0.8946 | 1.321 | 4.736 | 7.849 | 0.713 | 16.77 | 0.2824 |
| 1300 | 1.1884 | 0.9013 | 1.319 | 4.846 | 8.054 | 0.715 | 17.85 | 0.2715 |
| 1350 | 1.1946 | 0.9075 | 1.316 | 4.952 | 8.253 | 0.717 | 18.94 | 0.2615 |
| 1400 | 1.2005 | 0.9134 | 1.314 | 5.057 | 8.450 | 0.719 | 20.06 | 0.2521 |
| 1500 | 1.2112 | 0.9241 | 1.311 | 5.264 | 8.831 | 0.722 | 22.36 | 0.2353 |
| 1600 | 1.2207 | 0.9336 | 1.308 | 5.457 | 9.199 | 0.724 | 24.74 | 0.2206 |
| 1700 | 1.2293 | 0.9422 | 1.305 | 5.646 | 9.554 | 0.726 | 27.20 | 0.2076 |
| 1800 | 1.2370 | 0.9499 | 1.302 | 5.829 | 9.899 | 0.728 | 29.72 | 0.1961 |
| 1900 | 1.2440 | 0.9569 | 1.300 | 6.008 | 10.233 | 0.730 | 32.34 | 0.1858 |
1) At pressure 1 atm