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Methane - Thermal Conductivity vs. Temperature and Pressure

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Thermal conductivity is a material property that describes ability to conduct heat . Thermal conductivity can be defined as

" the quantity of heat transmitted through a unit thickness of a material - in a direction normal to a surface of unit area - due to a unit temperature gradient under steady state conditions".

Thermal conductivity most common units are W/(m K) in the SI system and Btu/(h ft °F) in the Imperial system.

Tabulated values and thermal conductivity units conversion are given below the figures.

Online Methane Thermal Conductivity Calculator

The calculator below can be used to estimate the thermal conductivity of gaseous methane at given temperatures and 1 bara.
The output conductivity is given as mW/(m K), Btu(IT)/(h ft °F), (Btu(IT) in)/(h ft 2 °F) and kcal(IT)/(h m K).

Choose the actual unit of temperature:


See also other properties of Methane at varying temperature and pressure : Density and specific weight , Dynamic and kinematic viscosity , Prandtl number and Specific heat (Heat capacity) , and Thermophysical properties at standard conditions ,
as well as thermal conductivity o f air , ammonia , butane , carbon dioxide , ethane , ethylene , hydrogen , nitrogen , propane and water .

See also Conductive Heat Transfer Calculator







Thermal conductivity of methane at given temperatures and pressures:

For full table with Thermal Conductivity - rotate the screen!

Methane - Thermal Conductivity vs. Temperature and Pressure
State Temperature Pressure Thermal conductivity
[K] [°C] [°F] [MPa] [bara] [psia] [mW/m K] [kcal(IT)/(h m K)] [Btu(IT)/(h ft °F)] [Btu(IT) in/(h ft2 °F)]
Liquid 100 -173 -280 0.1 1 14.5 199.7 0.1717 0.1154 1.385
111.5 -161.6 -259.0 0.1 1 14.5 184.1 0.1583 0.1064 1.276
Gas 111.5 -161.6 -259.0 0.1 1 14.5 11.43 0.009828 0.006604 0.07925
140 -133 -208 0.1 1 14.5 14.65 0.01260 0.008465 0.1016
180 -93.2 -136 0.1 1 14.5 19.32 0.01661 0.01116 0.1340
200 -73.2 -99.7 0.1 1 14.5 21.94 0.01887 0.01268 0.1521
220 -53.2 -63.7 0.1 1 14.5 23.99 0.02063 0.01386 0.1663
240 -33.2 -27.7 0.1 1 14.5 26.39 0.02269 0.01525 0.1830
260 -13.2 8.3 0.1 1 14.5 28.88 0.02483 0.01669 0.2002
280 6.9 44.3 0.1 1 14.5 31.47 0.02706 0.01818 0.2182
300 26.9 80.3 0.1 1 14.5 34.19 0.02940 0.01975 0.2371
320 46.9 116 0.1 1 14.5 37.04 0.03185 0.02140 0.2568
340 66.9 152 0.1 1 14.5 40.03 0.03442 0.02313 0.2775
360 86.9 188 0.1 1 14.5 43.15 0.03710 0.02493 0.2992
400 127 260 0.1 1 14.5 49.80 0.04282 0.02877 0.3453
500 227 440 0.1 1 14.5 68.34 0.05876 0.03949 0.4738
600 327 620 0.1 1 14.5 88.80 0.07635 0.05131 0.6157
700 427 800 0.1 1 14.5 110.4 0.0949 0.06379 0.7655
800 527 980 0.1 1 14.5 132.5 0.1139 0.07656 0.9187
900 627 1160 0.1 1 14.5 154.7 0.1330 0.08938 1.073
1000 727 1340 0.1 1 14.5 176.7 0.1519 0.10210 1.225
Liquid 100 -173 -280 1 10 145 200.6 0.1725 0.1159 1.391
149.1 -124.0 -191.2 1 10 145 130.7 0.1123 0.07549 0.9059
Gas 149.1 -124.0 -191.2 1 10 145 18.17 0.01562 0.01050 0.1260
160 -113 -172 1 10 145 18.79 0.01616 0.01086 0.1303
180 -93.2 -136 1 10 145 20.65 0.01776 0.01193 0.1432
200 -73.2 -99.7 1 10 145 22.74 0.01955 0.01314 0.1577
220 -53.2 -63.7 1 10 145 24.90 0.02141 0.01439 0.1726
240 -33.2 -27.7 1 10 145 27.19 0.02338 0.01571 0.1885
260 -13.2 8.3 1 10 145 29.60 0.02545 0.01710 0.2052
280 6.9 44.3 1 10 145 32.12 0.02762 0.01856 0.2227
300 26.9 80.3 1 10 145 34.79 0.02991 0.02010 0.2412
320 46.9 116 1 10 145 37.59 0.03232 0.02172 0.2606
340 66.9 152 1 10 145 40.54 0.03486 0.02342 0.2811
360 86.9 188 1 10 145 43.64 0.03752 0.02521 0.3026
400 127 260 1 10 145 50.23 0.04319 0.02902 0.3483
500 227 440 1 10 145 68.68 0.05905 0.03968 0.4762
600 327 620 1 10 145 89.08 0.07660 0.05147 0.6176
Liquid 100 -173 -280 5 50 725 204.5 0.1758 0.1181 1.418
Supercritical
phase		 200 -73.2 -99.7 5 50 725 40.61 0.03492 0.02347 0.2816
300 26.9 80.3 5 50 725 38.48 0.03309 0.02223 0.2668
400 127 260 5 50 725 52.69 0.04531 0.03045 0.3653
500 227 440 5 50 725 70.51 0.06063 0.04074 0.4889
600 327 620 5 50 725 90.50 0.07781 0.05229 0.6275
Liquid 100 -173 -280 10 100 1450 209.1 0.1798 0.1208 1.450
Supercritical
phase		 200 -73.2 -100 10 100 1450 84.23 0.07243 0.04867 0.5840
240 -33.2 -27.7 10 100 1450 49.74 0.04277 0.02874 0.3449
260 -13.2 8.3 10 100 1450 44.85 0.03856 0.02591 0.3110
280 6.9 44.3 10 100 1450 43.81 0.03767 0.02531 0.3038
300 26.9 80.3 10 100 1450 44.37 0.03815 0.02564 0.3076
320 46.9 116 10 100 1450 45.79 0.03937 0.02646 0.3175
340 66.9 152 10 100 1450 47.75 0.04106 0.02759 0.3311
360 86.9 188 10 100 1450 50.09 0.04307 0.02894 0.3473
400 127 260 10 100 1450 55.61 0.04782 0.03213 0.3856
500 227 440 10 100 1450 72.78 0.06258 0.04205 0.5046
Supercritical
phase		 200 -73.2 -100 100 1000 14500 188.1 0.1617 0.1087 1.304
300 26.9 80.3 100 1000 14500 137.7 0.1184 0.07955 0.9546
400 127 260 100 1000 14500 120.4 0.1035 0.06955 0.8347
500 227 440 100 1000 14500 120.9 0.1039 0.06984 0.8381
600 327 620 100 1000 14500 130.4 0.1121 0.07532 0.9039

Thermal conductivity units conversion:

Thermal conductivity unit converter

british thermal unit(international)/(foot hour degree fahrenheit) [Btu(IT)/(ft h°F], british thermal unit(international)/(inch hour degree fahrenheit) [Btu(IT)/(in h°F], british thermal unit(international)*inch/(square foot*hour*degree fahrenheit) [(Btu(IT) in)/(ft² h°F)], kilocalorie/(meter hour degree celcius) [kcal/(m h°C)], joule/(centimeter second degree kelvin) [J/(cm s K)], watt/(meter degree kelvin) [W/(m°C)],

  • 1 Btu(IT)/(ft h°F) = 1/12 Btu(IT)/(in h°F) = 0.08333 Btu(IT)/(in h°F) = 12 Btu(IT)in/(ft 2 h°F) = 1.488 kcal/(m h°C) = 0.01731 J/(cm s K) = 1.731 W/(m K)
  • 1 Btu(IT)/(in h°F) = 12 Btu(IT)/(ft h°F) = 144 Btu(IT)in/(ft 2 h°F) = 17.858 kcal/(m h°C) = 0.20769 J/(cm s K)= 20.769 W/(m K)
  • 1 (Btu(IT) in)/(ft² h°F) = 0.08333 Btu(IT)/(ft h°F) = 0.00694 Btu(IT)/(in h°F) = 0.12401 kcal/(m h°C) = 0.001442 J/(cm s K) = 0.1442 W/(m K)
  • 1 J/(cm s K) = 100 W/(m K) = 57.789 Btu(IT)/(ft h°F) = 4.8149 Btu(IT)/(in h°F) = 693.35 (Btu(IT) in)/(ft² h°F) = 85.984 kcal/(m h°C)
  • 1 kcal/(m h°C) = 0.6720 Btu(IT)/(ft h°F) = 0.05600 Btu(IT)/(in h°F) = 8.0636 (Btu(IT) in)/(ft 2 h°F) = 0.01163 J/(cm s K) = 1.163 W/(m K)
  • 1 W/(m K) = 0.01 J/(cm s K) = 0.5779 Btu(IT)/(ft h°F) = 0.04815 Btu(IT)/(in h°F) = 6.9335 (Btu(IT) in)/(ft² h°F) = 0.85984 kcal/(m h°C)
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