Thermal Conductivity of Water: Temperature and Pressure Data

Thermal conductivity of water (liquid and gas phase) with varying temperature and pressure in SI and Imperial units. Thermal conductivity describes the ability to conduct heat and depends on both temperature and pressure conditions.

State of Water	Temperature (°C)	Thermal Conductivity (mW/m·K)	Thermal Conductivity (kcal(IT)/(h·m·K))	Thermal Conductivity (Btu(IT)/(h·ft·°F))
Liquid	0.01	555.75	0.4779	0.3211
Liquid	10	578.64	0.4975	0.3343
Liquid	20	598.03	0.5142	0.3455
Liquid	30	614.50	0.5284	0.3551
Liquid	40	628.56	0.5405	0.3632
Liquid	50	640.60	0.5508	0.3701
Liquid	60	650.91	0.5597	0.3761
Liquid	70	659.69	0.5672	0.3812
Liquid	80	667.02	0.5735	0.3854
Liquid	90	672.88	0.5786	0.3888
Liquid	99.6	677.03	0.5821	0.3912
Gas	100	24.57	0.0211	0.0142
Gas	125	26.66	0.0229	0.0154
Gas	150	28.83	0.0248	0.0167
Gas	175	31.09	0.0267	0.0180
Gas	200	33.43	0.0287	0.0193
Gas	225	35.85	0.0308	0.0207
Gas	250	38.34	0.0330	0.0222
Gas	275	40.91	0.0352	0.0236
Gas	300	43.53	0.0374	0.0252
Gas	350	48.98	0.0421	0.0283
Gas	400	54.65	0.0470	0.0316
Gas	450	60.52	0.0520	0.0350
Gas	500	66.58	0.0573	0.0385
Gas	550	72.81	0.0626	0.0421
Gas	600	79.17	0.0681	0.0457
Gas	700	92.28	0.0794	0.0533
Gas	800	105.81	0.0910	0.0611
Gas	900	119.67	0.1029	0.0691